Information:  - Arkansas is a state located in the southeastern region of the United States. Its name is of Siouan derivation from the language of the Osage denoting their related kin, the Quapaw Indians. The state's diverse geography ranges from the mountainous regions of the Ozark and the Ouachita Mountains, which make up the U.S. Interior Highlands, to the densely forested land in the south known as the Arkansas Timberlands, to the eastern lowlands along the Mississippi River and the Arkansas Delta.  - The Gulf of Mexico is an ocean basin largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of the United States, on the southwest and south by Mexico, and on the southeast by Cuba. The U.S. states of Alabama, Florida, Louisiana, Mississippi and Texas border the Gulf on the north, which are often referred to as the "Third Coast" in comparison with the U.S. Atlantic and Pacific coasts, or sometimes the "south coast", in juxtaposition to the Great Lakes region being the "north coast." One of the gulf's seven main areas is the Gulf of Mexico basin.  - Tamaulipas, officially the Free and Sovereign State of Tamaulipas, is one of the 31 states which, with Mexico City, comprise the 32 Federal Entities of Mexico. It is divided into 43 municipalities and its capital city is Ciudad Victoria. The capital city was named after Guadalupe Victoria, the first President of Mexico.  - Coahuila, formally Coahuila de Zaragoza, officially the Free and Sovereign State of Coahuila de Zaragoza, is one of the 31 states which, along with Mexico City, compose the 32 Federal Entities of Mexico. The state is located in Northeastern Mexico on the US border.  - A U.S. state is a constituent political entity of the United States of America. There are 50 states, which are bound together in a union with each other. Each state holds administrative jurisdiction over a defined geographic territory, and shares its sovereignty with the United States federal government. Due to the shared sovereignty between each state and the federal government, Americans are citizens of both the federal republic and of the state in which they reside. State citizenship and residency are flexible, and no government approval is required to move between states, except for persons covered by certain types of court orders (e.g., paroled convicts and children of divorced spouses who are sharing custody).  - The Green Party of the United States (GPUS or Greens) is a green and progressive political party in the United States.  - Nuevo León, or New Leon, officially the Free and Sovereign State of Nuevo León, is one of the 31 states which, with Mexico City, compose the 32 Federal Entities of Mexico. It is divided into 51 municipalities and its capital city is Monterrey.  - Texas is the second largest state in the United States by both area and population. Geographically located in the south central part of the country, Texas shares borders with the U.S. states of Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the west, and the Mexican states of Chihuahua, Coahuila, Nuevo León, and Tamaulipas to the southwest, while the Gulf of Mexico is to the southeast.  - Louisiana (or  ; Louisiana Creole: "Léta de la Lwizyàn") is a state located in the southern region of the United States. Louisiana is the 31st most extensive and the 25th most populous of the 50 United States. Its capital is Baton Rouge and largest city is New Orleans. Louisiana is the only state in the U.S. with political subdivisions termed parishes, which are the local government's equivalent to counties. The largest parish by population is East Baton Rouge Parish, and the largest by total area is Plaquemines. Louisiana is bordered by Arkansas to the north, Mississippi to the east, Texas to the west, and the Gulf of Mexico to the south.  - The Green Party of Texas is the state party organization for Texas of the Green Party of the United States .  - Oklahoma (Cherokee: "Asgaya gigageyi" /  ; or transliterated from English as  ("òàlàhoma"), Pawnee: "Uukuhuúwa", Cayuga: "Gahnawiyogeh") is a state located in the South Central United States. Oklahoma is the 20th-most extensive and the 28th-most populous of the 50 United States. The state's name is derived from the Choctaw words "okla" and "humma", meaning "red people". It is also known informally by its nickname, "The Sooner State", in reference to the non-Native settlers who staked their claims on the choicest pieces of land before the official opening date, and the Indian Appropriations Act of 1889, which opened the door for white settlement in America's Indian Territory. The name was settled upon statehood, Oklahoma Territory and Indian Territory were merged and Indian was dropped from the name. On November 16, 1907, Oklahoma became the 46th state to enter the union. Its residents are known as "Oklahomans", or informally "Okies", and its capital and largest city is Oklahoma City.  - New Mexico is a state located in the southwestern region of the United States of America. It was admitted to the union as the 47th state on January 6, 1912. It is usually considered one of the Mountain States. New Mexico is fifth by area, the 36th-most populous, and the sixth-least densely populated of the 50 United States.  - Mexico (, modern Nahuatl ), officially the United Mexican States, is a federal republic in the southern half of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatemala, Belize, and the Caribbean Sea; and to the east by the Gulf of Mexico. Covering almost two million square kilometers (over 760,000 sq mi), Mexico is the sixth largest country in the Americas by total area and the 13th largest independent nation in the world. With an estimated population of over 120 million, it is the eleventh most populous country and the most populous Spanish-speaking country in the world while being the second most populous country in Latin America. Mexico is a federation comprising 31 states and a federal district that is also its capital and most populous city. Other metropolises include Guadalajara, Monterrey, Puebla, Toluca, Tijuana and León.    After reading the paragraphs above, we are interested in knowing the entity with which 'green party of texas' exhibits the relationship of 'instance of'. Find the answer from the choices below.  Choices: - area  - city  - country  - court  - derivation  - federal district  - federal government  - federation  - government  - green party  - gulf  - jurisdiction  - local government  - mountain  - name  - nickname  - november  - ocean  - opening  - parish  - people  - political party  - population  - reference  - region  - republic  - sea  - settlement  - sharing  - state  - territory  - two
A:
political party