People are looking at things at some kind of exhibit.
Several people are looking at things at some kind of exhibit.
People looking at exhibit. The later is simply a glorified elaboration of the earlier focus.
exists e1 x1 x2 x3 x4.(at(e1,x2) & at(x2,x3) & of(x3,x4) & n_exhibit(x4) & n_kind(x3) & n_thing(x2) & Actor(e1,x1) & v_look(e1) & n_people(x1))
exists e1 s1 x1 x2 x3 x4.(at(e1,x2) & at(x2,x3) & of(x3,x4) & n_exhibit(x4) & n_kind(x3) & n_thing(x2) & Actor(e1,x1) & v_look(e1) & n_people(x1) & a_several(s1) & Theme(s1,x1))