premise: One many is fishing by a river with some buildings in the background while another man next to him is about to get a drink from the bottle next to him.
hypothesis: A father and son are fishing together
explanation_1: Just because two men are fishing doesn't mean they are father and son.
explanation_2: Just because two men are fishing next to each other does not mean they are father and son.
explanation_3: Not all men are father and son.
premise_logic: exists e1 p1 x1 x2 x3 x4 x5 x9.(n_male(x4) & n_male(x4) & n_bottle(x9) & n_man(x5) & n_background(x4) & exists p2 s1 x6 x7.(Topic(s1,p2) & Actor(s1,x6) & a_about(s1) & exists e2 x8 x10.(from(e2,x9) & to(x10,x4) & next(x9,x10) & n_thing(x10) & Theme(e2,x8) & Actor(e2,x6) & v_get(e2) & n_drink(x8)) & to(x7,x4) & next(x6,x7) & n_thing(x7) & n_man(x6) & -(x6 = x5)) & while(e1,p1) & by(e1,x2) & with(x2,x3) & in(x3,x4) & n_building(x3) & n_river(x2) & Actor(e1,x1) & v_fish(e1) & n_quantity(x1) & card_eq_1(x1))
hypothesis_logic: exists e1 p1 x1 x2 x3.(exists s1.(Theme(s1,x1) & a_together(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_fish(e1) & n_son(x3) & n_father(x2) & subset_of(x3,x1) & subset_of(x2,x1))