A man climbs some rocks.
A man swimming in a lake
The man can not be simultaneously swimming and climbing.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_climb(e1) & n_rock(x2) & n_man(x1))
exists x1 x2 x3.(a_topic(x1) & in(x1,x3) & n_lake(x3) & n_swimming(x1) & of(x1,x2) & n_man(x2))