Task: Question Understanding
Input (English): Context : 54 Piscium b (HD 3651 b), occasionally catalogued as 54 Piscium Ab in order to differentiate from the brown dwarf in the system, is an extrasolar planet approximately 36 light-years away in the constellation of Pisces. 
Question : Which was the constellation for 54 Piscium b?
Output (English): constellation