A man is standing on his head while he performs for a crowd.
A man is performing to day at a birthday party.
A man is standing on his head while he performs for a crowd does not imply that he is performing to day at a birthday party.
exists e1 p1 x1 x2.(exists e2 x3.(for(e2,x3) & n_crowd(x3) & Actor(e2,x1) & v_perform(e2)) & n_male(x1) & n_male(x1) & while(e1,p1) & on(e1,x2) & n_head(x2) & of(x2,x1) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
exists e1 x1 x2 x3 x4.(at(e1,x3) & n_party(x3) & of(x3,x4) & n_birthday(x4) & to(e1,x2) & n_day(x2) & Actor(e1,x1) & v_perform(e1) & n_man(x1))