Two swimmers watch as two other swimmers leap out of the water at each other.
Swimmers drowning
Swimmers can't be drowning because that implies not leaping out of the water.
exists e1 e2 s1 x1 x2 x3 x4.(n_water(x4) & all x5.(n_other(x5) -> at(e2,x5)) & of(e2,x4) & r_out(e2) & Actor(e2,x1) & v_leap(e2) & Theme(e1,x3) & Actor(e1,x2) & v_watch(e1) & -(x3 = x1) & n_swimmer(x1) & n_swimmer(x1) & n_swimmer(x3) & card_eq_2(x3) & a_as(s1) & Theme(s1,x3) & (x1 = x2) & card_eq_2(x1))
exists e1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_drown(e1) & (x1 = x2) & n_swimmer(x1))