a man in a plaid shirt blows a horn.
A man is sitting on his hands while eating donuts.
A man that blows a horn cannot be eating donuts at the same time.
exists x1.(all x2.(n_horn(x2) -> exists s1 x3 x4.(a_topic(x1) & in(x1,x3) & for(x3,x2) & n_blow(x3) & of(x3,x4) & n_shirt(x4) & a_plaid(s1) & Theme(s1,x3))) & n_man(x1))
exists e2 e1 x1 x2 x3.(while(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_eat(e2) & n_donut(x3) & on(e1,x2) & n_hand(x2) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_sit(e1) & n_man(x1))