premise: Two men riding a boat in clear water on a sunny day.
hypothesis: Two men fish in a boat on a river on a sunny day.
explanation_1: Not all clear water are river.
explanation_2: water doesn't have to be a river and men don't have to fish on a boat
explanation_3: Riding in a boat does not mean fish in a boat.
premise_logic: exists e1 s1 s2 x1 x2 x3 x4 x5.(a_topic(x1) & on(e1,x5) & n_day(x5) & a_sunny(s2) & Theme(s2,x5) & in(e1,x4) & n_water(x4) & a_clear(s1) & Theme(s1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_boat(x3) & (x1 = x2) & n_man(x1) & card_eq_2(x1))
hypothesis_logic: exists s1 x1 x2 x3 x4 x5.(a_topic(x1) & in(x1,x3) & on(x3,x4) & on(x4,x5) & n_day(x5) & a_sunny(s1) & Theme(s1,x5) & n_river(x4) & n_boat(x3) & n_fish(x1) & of(x1,x2) & n_man(x2) & card_eq_2(x1))