A man in a white shirt cutting a cake while coworkers watch.
they are having an office party
Cutting a cake while coworkers watch doesn't necessarily imply they are having a party.
exists e1 p1 s1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & exists e2 x5.(Actor(e2,x5) & v_watch(e2) & n_coworker(x5)) & while(e1,p1) & Theme(e1,x4) & Actor(e1,x3) & v_cut(e1) & n_cake(x4) & (x2 = x3) & n_shirt(x2) & a_white(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_party(x2) & of(x2,x1) & n_office(x1) & n_thing(x1))