instruction:
Classify the relation of question with context to one of these categories: 1) award received, 2) based on, collection, 3) conflict, 4) constellation, 5) convicted of, 6) date of death, 7) director, 8) drafted by, 9) educated at, 10) medical condition, 11) military branch, 12) narrative location, 13) occupation, 14) original network, 15) parent company, 16) point in time, 17) production company, 18) residence, 19) series, 20) service entry, 21) sex or gender, 22) spouse, 23) standards body question.
question:
Context : PSR J1719-1438 was discovered in 2011 by the High Time Resolution Survey, a radio astronomy search for astronomical objects that rapidly vary in radio brightness, such as pulsars. 
Question : Which constellation is formed by PSR J1719-1438?
answer:
constellation


question:
Context : Margo Johns (1919 -- 29 September 2009) was a British actress and the first wife of actor William Franklyn. 
Question : What is Margo Johns's spouse's name?
answer:
spouse


question:
Context : Eitan Tchernov (1935-December 13, 2002) was an author and professor of biology at the Hebrew University of Jerusalem. 
Question : Where did Eitan Tchernov study or work?
answer:

educated at