A man kayaking through rapids.
a man is having dinner at a swimming pool
If the man is kayaking, he can't be having dinner at the same time.
exists e1 x1 x2 x3.(a_topic(x1) & through(e1,x3) & n_rapid(x3) & Actor(e1,x2) & v_kayake(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2 x3 x4.(at(e1,x3) & n_pool(x3) & of(x3,x4) & n_swimming(x4) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_dinner(x2) & n_man(x1))