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 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

Context : Born Robert Alton Hart in Bennington, Vermont, Alton studied dance with Ralph McKernan in Springfield, Massachusetts and spent his summers in New York studying with Bert French and Mikhail Mordkin, formerly of the Bolshoi Ballet and Sergey Diaghilev's Ballets Russes. 
Question : What kind of  occupation does Robert Alton have?
occupation

Context : The film is about an extraterrestrial (played by Brad Dourif) who came to Earth several decades ago from a water planet (The Wild Blue Yonder), after it experienced an ice age. 
Question : Who is the director of The Wild Blue Yonder?

director