Two men are toasting a cup of beer together, while another watches.
People are celebrating.
You can not infer they are celebrating.
exists e1 s1 x1 x2 x3 x4 x5.(n_watch(x4) & while(e1,x5) & n_watch(x5) & -(x5 = x4) & a_together(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_toast(e1) & of(x2,x3) & n_beer(x3) & n_cup(x2) & n_man(x1) & card_eq_2(x1))
exists e1 x1.(Actor(e1,x1) & v_celebrate(e1) & n_people(x1))