Man preparing food while two others watch.
The man is cooking.
Preparing food can be rephrased cooking.
exists e2 e1 x1 x2 x3 x4 x5.(Theme(e2,x5) & Actor(e2,x1) & v_watch(e2) & n_thing(x5) & while(e1,x4) & -(x4 = x1) & n_person(x1) & n_person(x4) & card_eq_2(x4) & Theme(e1,x3) & Actor(e1,x2) & v_prepare(e1) & n_food(x3) & (x1 = x2) & n_man(x1))
exists s1 x1.(n_man(x1) & Theme(s1,x1) & a_cooking(s1))