Information:  - A musician (or instrumentalist) is a person who plays a musical instrument or is musically talented. Anyone who composes, conducts, or performs music may also be referred to as a musician.   - Old Canes is a rock band from Lawrence, Kansas currently composed of front man Christopher Crisci (of The Appleseed Cast) on vocals and guitar, and a rotating cast of musicians. Because most of the band members, including Crisci, participate in other bands, Old Canes is joined on tour by other available musicians known to the band, including John Momberg (of The Appleseed Cast), Taylor Holenbeck, Sam Goodell, Rusty Scott, Kelly Hangauer (of Fourth Of July), Lucas Oswald (Minus Story) and Jeff Stolz, in what they call a "musical collective." Past members include Nathan Richardson (Casket Lottery), Jordan Geiger (Minus Story), Eric Verhar, Tyler French (Minus Story), Gabriel Booth, Kelsey Richardson, and Jon Anderson (Boys Life).  - Lucas Harrison Oswald ( born June 11 , 1988 ) is an American musician , known as a multi-instrumental and vocal contributor to the bands Shearwater , The Appleseed Cast , Minus Story , Hospital Ships , and Old Canes . He composed music for the second and third seasons of Green Porno and one episode of the American television show Boss ( TV series ) .  - Music is an art form and cultural activity whose medium is sound and silence, which exist in time. The common elements of music are pitch (which governs melody and harmony), rhythm (and its associated concepts tempo, meter, and articulation), dynamics (loudness and softness), and the sonic qualities of timbre and texture (which are sometimes termed the "color" of a musical sound). Different styles or types of music may emphasize, de-emphasize or omit some of these elements. Music is performed with a vast range of instruments and vocal techniques ranging from singing to rapping; there are solely instrumental pieces, solely vocal pieces (such as songs without instrumental accompaniment) and pieces that combine singing and instruments. The word derives from Greek  ("mousike"; "art of the Muses"). In its most general form, the activities describing music as an art form include the production of works of music (songs, tunes, symphonies, and so on), the criticism of music, the study of the history of music, and the aesthetic examination of music. Ancient Greek and Indian philosophers defined music as tones ordered horizontally as melodies and vertically as harmonies. Common sayings such as "the harmony of the spheres" and "it is music to my ears" point to the notion that music is often ordered and pleasant to listen to. However, 20th-century composer John Cage thought that any sound can be music, saying, for example, "There is no noise, only sound."    Given the information above, choose from the list below the object entity that exhibits the relation 'instrument' with the subject 'lucas oswald'.  Choices: - guitar  - singing
guitar

Information:  - Yoruba ("") is a language spoken in West Africa, mainly in Nigeria. The number of speakers of Yoruba is approaching 30 million. It is a pluricentric language spoken principally in Benin and Nigeria, with communities in other parts of Africa, the Americas, and Europe. A variety of the language, Lucumi, is the liturgical language of the Santería religion of the Caribbean. Many Yoruba words are used in the Afro-Brazilian religion known as Candomblé. Yoruba is most closely related to the Itsekiri language (spoken in the Niger Delta) and to Igala (spoken in central Nigeria).  - Caste is a form of social stratification characterized by endogamy, hereditary transmission of a lifestyle which often includes an occupation, status in a hierarchy, and customary social interaction and exclusion. Its paradigmatic ethnographic example is the division of Indian society into rigid social groups, with roots in India's ancient history and persisting until today. However, the economic significance of the caste system in India has been declining as a result of urbanization and affirmative action programs. A subject of much scholarship by sociologists and anthropologists, the Indian caste system is sometimes used as an analogical basis for the study of caste-like social divisions existing outside India. The term is also applied to non-human populations like ants and bees.  - An emperor (through Old French "empereor" from ) is a monarch, usually the sovereign ruler of an empire or another type of imperial realm. Empress, the female equivalent, may indicate an emperor's wife ("empress consort"), mother ("empress dowager"), or a woman who rules in her own right ("empress regnant"). Emperors are generally recognized to be of a higher honour and rank than kings. In Europe the title of Emperor was, since the Middle Ages, considered equal or almost equal in dignity to that of Pope, due to the latter's position as visible head of the Church and spiritual leader of Western Europe. The Emperor of Japan is the only currently reigning monarch whose title is translated into English as "Emperor".  - Alaafin, or "Man of the Palace" in the Yoruba language, was the title of the emperor of the medieval Oyo empire of northwestern Yorubaland. It was retained through the fall of that state as the official title of the ceremonial ruler of the contemporary Oyo clan.  - A warrior is a person specializing in combat or warfare, especially within the context of a tribal or clan-based warrior culture society that recognizes a separate warrior class or caste.  - The Oyo Empire was a Yoruba empire of what is today Western and North central Nigeria, and Eastern Benin. Established in the 15th century, the Oyo Empire grew to become one of the largest West African states. It rose through the outstanding organizational skills of the Yoruba, wealth gained from trade and its powerful cavalry. The Oyo Empire was the most politically important state in the region from the mid-17th to the late 18th century, holding sway not only over most of the other kingdoms in Yorubaland, but also over nearby African states, notably the Fon Kingdom of Dahomey in the modern Republic of Benin to the west.  - Yorubaland is the cultural region of the Yoruba people in West Africa. It spans the modern day countries of Nigeria, Togo and Benin, and covers a total land area of 142,114 km² or about the same size as the combined land areas of Greece and Montenegro, of which 106,016 km², representing about 74.6% within Nigeria, 18.9% in Benin, and the remaining 6.5% in Togo. The geocultural space contains an estimated 55 million people, the overwhelming majority of them are ethnic Yorubas. About 5.3 million people are estimated to practice Yoruba religion worldwide with the largest numbers found in Nigeria.  - Orompoto was an Alaafin of Oyo , also the empire 's titled ruler . She was the brother of her predecessor , Eguguojo . She was considered a skillful warrior and was known according to Oyo tales of her inadvertent victory at the battle of Illayi . While fighting her enemies , she lost three leaders of the van , called Gbonkas in Oyo . The third , however , fell with his teeth grinding and his mouth grinning , the enemies thought he was alive and was making a mocking gesture and were overwhelmed by what they considered their inability to wrestle with the Oyo gbokas . The enemies later decided to call it quits , with the Oyo later claiming victory . Orompoto used horses extensively in military battles and may have obtained them from Borgu .    Given the information above, choose from the list below the object entity that exhibits the relation 'country of citizenship' with the subject 'orompoto'.  Choices: - india  - japan  - montenegro  - niger  - nigeria  - realm
nigeria