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 : Grace Darling died of tuberculosis in October 1842, aged 26. 
Question : Which medical condition afflicts Grace Darling?
answer:
medical condition


question:
Context : Anna Sundström has been referred to as the first female chemist in Sweden. 
Question : What is the sex or gender of Anna Sundström?
answer:
sex or gender


question:
Context : Decameron Nights is a 1953 anthology Technicolor film based on three tales from The Decameron by Giovanni Boccaccio, specifically the ninth and tenth tales of the second day and the ninth tale of the third. 
Question : Which is the basis of Decameron Nights?
answer:

based on