TASK DEFINITION: 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.
PROBLEM: 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?

SOLUTION: point in time

PROBLEM: Context : In 1956 and 1957, the British and Commonwealth system of battle honours recognised participation in the Battle of Villers-Bocage by the award to 11 units of the battle honour Villers Bocage, for service in expanding the bridgehead from 8--15 June. 
Question : The point in time of Battle of Villers-Bocage was when?

SOLUTION: point in time

PROBLEM: Context : Alexander Adam was born near Forres, in Moray. 
Question : Which is the date of death for Alexander Adam?

SOLUTION:
date of death