The object is correctly mapped to the exhibition (an instance of E7 Activity) but the mapping uses the property P12 occurred in the presence of (was present at). I think the stronger statement P16 used specific object (was used for) could be used as the record is not just that they were present in the same room but actually formed part of the exhibit. The full path should then be:-
E22 ->P16i ->E7 [Exhibition]
->P16.1 ->E55 {Exhibit}
The object is correctly mapped to the exhibition (an instance of E7 Activity) but the mapping uses the property P12 occurred in the presence of (was present at). I think the stronger statement P16 used specific object (was used for) could be used as the record is not just that they were present in the same room but actually formed part of the exhibit. The full path should then be:- E22 ->P16i ->E7 [Exhibition] ->P16.1 ->E55 {Exhibit}