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.

Context : Jane Stafford (1899--1991) was an American medical writer and chemist. 
Question : What is the date of Jane Stafford's death?
date of death

Context : Madeleine L'Engle (/ˈmædəlɪn ˈlɛŋɡəl/; November 29, 1918 -- September 6, 2007; née Camp) was an American writer best known for young-adult fiction, particularly the Newbery Medal-winning A Wrinkle in Time and its sequels: 
Question : What award was received by Madeleine L'Engle?
award received

Context : ISO 3166-2:AD is the entry for Andorra in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1. 
Question : Who set the standards for ISO 3166-2:AD?

standards body