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 : The first astronomer to record the Butterfly Cluster's existence was Giovanni Battista Hodierna in 1654. 
Question : What constellation is home to Butterfly Cluster?
constellation

Context : ISO 3166-2:BN is the entry for Brunei 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:BN?
standards body

Context : The Treaty of Lausanne was a peace treaty signed in Lausanne, Switzerland, on 24 July 1923. 
Question : The date of Treaty of Lausanne was what?

point in time