premise: a man is swimming inside of a pool
hypothesis: there is a person drowning.
explanation_1: The man is swimming, so he is not drowning.
explanation_2: If you are swimming you won't be drowning.
explanation_3: A man can not be swimming and drowning simultaneously.
premise_logic: exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_swim(e1) & of(x2,x3) & n_pool(x3) & n_inside(x2) & n_man(x1))
hypothesis_logic: exists p1 x1 x2 x3.((x1 = x2) & Time(x2,x3) & n_drowning(x3) & n_person(x2))