ale gdy dotarliśmy na plac na który

ale gdy dotarliśmy na plac na którym miał odbywać się cykl koncertów oniemieliśmy

Results (English) 1:

but when we arrived at the square on which it had held a series of concerts oniemieliśmy

Results (English) 2:

but when we arrived at the square where he held a series of concerts dumbfounded

Results (English) 3:

But when we arrived at the square in which he had carried out a series of concerts oniemieliśmy