a man sawing through a big pipe
A man is sitting and drinking tea.
A man cannot be sitting ,drinking tea and sawing at the moment.
exists e1 s1 x1 x2 x3.(a_topic(x1) & through(e1,x3) & n_pipe(x3) & a_big(s1) & Theme(s1,x3) & Actor(e1,x2) & v_saw(e1) & (x1 = x2) & n_man(x1))
exists e1 e2 x1 x2 x3.(Theme(e2,x3) & Actor(e2,x2) & v_drink(e2) & n_tea(x3) & n_man(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))