Task: Question Generation
Input (English): Context : Supernova 1604, also known as Kepler's Supernova, Kepler's Nova or Kepler's Star, was a supernova of Type Ia that occurred in the Milky Way, in the constellation Ophiuchus. 
Subject : Kepler's Supernova 
Relation : constellation
Output (English): What constellation is where Kepler's Supernova is?