guy in the water paddling
A girl in water is drowning.
One is either a guy or a girl. One cannot be paddling and drowning at the same time.
exists x1 x2 x3.(n_paddling(x2) & of(x2,x3) & n_water(x3) & a_topic(x1) & in(x1,x2) & n_guy(x1))
exists e1 x1 x2.(Actor(e1,x1) & v_drown(e1) & in(x1,x2) & n_water(x2) & n_girl(x1))