Information:  - Ivan Roy Schwab is a professor of ophthalmology at the University of California Davis School of Medicine . Dr. Schwab completed his undergraduate degree at West Virginia University and received his M.D. from the West Virginia University School of Medicine . Dr. Schwab then completed a residency in ophthalmology at California Pacific Medical Center and a fellowship in corneal surgery at University of California San Francisco in 1982 . He is a Fellow of the American College of Surgeons . Dr. Schwab is currently the director of corneal services at UC Davis Medical Center and in addition to clinical and teaching duties conducts research in biomaterials . His past work includes the development of a bioengineered artificial cornea which can be used to treat patients with severe corneal damage . In addition to the diagnosis and treatment of ocular disorders , Dr. Schwab has an interest in comparative ophthalmology , examining the visual systems of animals such as stomatopods , mysid shrimp , and sharks and has published a book on the evolution of the eye . His work on why woodpeckers do n't get headaches was honored with an Ig Nobel Prize in 2006 .  - Ophthalmology (or ) is the branch of medicine that deals with the anatomy, physiology and diseases of the eyeball. An ophthalmologist is a specialist in medical and surgical eye problems. Since ophthalmologists perform operations on eyes, they are both surgical and medical specialists. A multitude of diseases and conditions can be diagnosed from the eye.  - Medicine (British English ; American English ) is the science and practice of the diagnosis, treatment, and prevention of disease. The word "medicine" is derived from Latin "medicus", meaning "a physician". Medicine encompasses a variety of health care practices evolved to maintain and restore health by the prevention and treatment of illness. Contemporary medicine applies biomedical sciences, biomedical research, genetics, and medical technology to diagnose, treat, and prevent injury and disease, typically through pharmaceuticals or surgery, but also through therapies as diverse as psychotherapy, external splints and traction, medical devices, biologics, and ionizing radiation, amongst others.    After reading the paragraphs above, we are interested in knowing the entity with which 'ivan r. schwab' exhibits the relationship of 'occupation'. Find the answer from the choices below.  Choices: - ophthalmologist  - ophthalmology  - physiology  - research  - science
ophthalmologist

Information:  - The 12th Pan American Games were held in Mar del Plata, Argentina, from March 12 to March 26, 1995. After 44 years, this was the Pan American Games first return to the country that hosted the first Games, in 1951.  - Argentina, officially the Argentine Republic, is a federal republic in the southern half of South America. Sharing the bulk of the Southern Cone with its neighbor Chile to the west, the country is also bordered by Bolivia and Paraguay to the north, Brazil to the northeast, Uruguay and the South Atlantic Ocean to the east, and the Drake Passage to the south. With a mainland area of , Argentina is the eighth-largest country in the world, the second largest in Latin America, and the largest Spanish-speaking one. The country is subdivided into twenty-three provinces (singular "provincia") and one autonomous city ("ciudad autónoma"), Buenos Aires, which is the federal capital of the nation as decided by Congress. The provinces and the capital have their own constitutions, but exist under a federal system.  - The Pan-American or Pan American Games (also known colloquially as the Pan Am Games) is a major sporting event in the Americas featuring summer sports, in which thousands of athletes participate in a variety of competitions. The competition is held among athletes from nations of the Americas, every four years in the year before the Summer Olympic Games. The only Winter Pan American Games were held in 1990. The Pan American Sports Organization (PASO) is the governing body of the Pan American Games movement, whose structure and actions are defined by the Olympic Charter.  - This page shows the results of the Judo Competition for men and women at the 1995 Pan American Games , held from March 11 to March 26 in Mar del Plata , Argentina . There were eight weight divisions .  - Mar del Plata is an Argentine city in the southeast part of Buenos Aires Province located on the coast of the Atlantic Ocean. It is the head of General Pueyrredón Partido. Mar del Plata is the second largest city in Buenos Aires Province. The name "Mar del Plata" has the meaning of "sea of the Plate region" or "adjoining sea to the (River) Plate region". Mar del Plata is one of the major fishing ports and the biggest seaside beach resort in Argentina. With a population of 614,350 as per the , it is the 7th largest city in Argentina.    After reading the paragraphs above, we are interested in knowing the entity with which 'judo at the 1995 pan american games' exhibits the relationship of 'instance of'. Find the answer from the choices below.  Choices: - buenos aires  - city  - competition  - congress  - country  - del  - event  - federal republic  - four  - governing body  - march  - name  - ocean  - organization  - pan american games  - plate  - population  - republic  - resort  - river  - sea  - sharing  - sports organization  - structure  - three  - variety
event