Task: Question Understanding
Input (English): Context : The Pietà for Vittoria Colonna is a black chalk drawing on cardboard (28.9×18.9 cm) by Michelangelo Buonarroti, dated to about 1538--44 and kept at the Isabella Stewart Gardner Museum in Boston. 
Question : What is the name of the place where Pietà for Vittoria Colonna can be found?
Output (English): collection