A boy is pulling a wild face whilst waving cooking implements in his hands.
A girl makes mud pies.
A boy is not a girl, he could be making anything in sentence one, in sentence 2 she is clearly making mud pies.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6.(for(e1,e2) & in(e2,x6) & n_hand(x6) & of(x6,x1) & n_male(x1) & Theme(e2,x4) & Actor(e2,x1) & v_wave(e2) & n_implement(x4) & of(x4,x5) & n_cooking(x5) & Theme(e1,x2) & Actor(e1,x1) & v_pull(e1) & n_whilst(x2) & of(x2,x3) & n_face(x3) & a_wild(s1) & Theme(s1,x2) & n_boy(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & n_pie(x2) & of(x2,x3) & n_mud(x3) & n_girl(x1))