People enjoying themselves at a party.
People are reading at the library.
Party and library are two different places.
exists e1 x1 x2 x3 x4.(n_group(x3) & a_topic(x1) & at(e1,x4) & n_party(x4) & Theme(e1,x3) & Actor(e1,x2) & v_enjoy(e1) & (x1 = x2) & n_people(x1))
exists e1 x1 x2.(n_library(x2) & at(e1,x2) & Actor(e1,x1) & v_read(e1) & n_people(x1))