premise: A man talks to two guards as he holds a drink.
hypothesis: The man is scuba diving.
explanation_1: The man talks to the guards while he holds a drink or he is scuba diving, cannot be doing both things.
explanation_2: He is holding a drink, not scuba diving.
explanation_3: Scuba diving is done underwater.  The man cannot talk underwater.
premise_logic: exists p1 x1 x2 x3.(a_topic(x1) & exists e1 x4.(Theme(e1,x4) & Actor(e1,x1) & v_hold(e1) & n_drink(x4)) & n_male(x1) & as(x1,p1) & to(x1,x3) & n_guard(x3) & card_eq_2(x3) & n_talk(x1) & of(x1,x2) & n_man(x2))
hypothesis_logic: exists p1 x1.(n_man(x1) & exists s1 x2.((x1 = x2) & n_diving(x2) & a_scuba(s1) & Theme(s1,x2)))
premise_sim: exists p1 x1 x2 x3.(to(x1,x3) & of(x1,x2) & n_talk(x1) & n_man(x2) & n_male(x1) & n_guard(x3) & exists e1 x4.(v_hold(e1) & n_drink(x4) & Theme(e1,x4) & Actor(e1,x1)) & card_eq_2(x3) & as(x1,p1) & a_topic(x1))
hypothesis_sim: exists x1.(n_man(x1) & exists s1 x2.(n_diving(x2) & a_scuba(s1) & Theme(s1,x2) & (x1 = x2)))