Men stand by one another wearing robes and college graduate hats.
The men are celebrating their graduation.
Just because men in robes and graduate hats are standing does not mean that they are celebrating their graduation.
exists e2 e1 s1 x1 x2 x3 x4 x5 x6 x7 x8.(by(e1,x2) & subset_of(x6,x2) & n_hat(x6) & of(x6,x8) & n_graduate(x8) & of(x6,x7) & n_college(x7) & subset_of(x3,x2) & Theme(e2,x5) & Actor(e2,x4) & v_wear(e2) & n_robe(x5) & (x3 = x4) & n_thing(x3) & card_eq_1(x3) & a_another(s1) & Theme(s1,x3) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
exists e1 x1 x2.(n_graduation(x2) & of(x2,x1) & n_thing(x1) & n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_celebrate(e1))