A man is sitting in the grass behind a tree.
A man sits and writes poems for his wife.
Not all men sitting in the grass are writing poems for their wife.
exists e1 x1 x2 x3.(n_grass(x2) & behind(e1,x3) & n_tree(x3) & in(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
exists e2 e1 x1 x2 x3 x4.(for(e2,x4) & n_wife(x4) & of(x4,x1) & n_male(x1) & Theme(e2,x3) & Actor(e2,x2) & v_write(e2) & n_poem(x3) & n_man(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))