premise: Four men (2 observing) with helmets are digging in the ground.
hypothesis: Four men are working together.
explanation_1: Just because four men, two of whom are observing, are digging in the ground does not mean that they are working together.
premise_logic: exists e1 x1 x2 x3 x4.(n_ground(x4) & in(e1,x4) & Actor(e1,x1) & v_dig(e1) & with(x1,x3) & n_helmet(x3) & rel(x1,x2) & n_observe(x2) & n_date(x2) & a_date_day_02(x2) & a_date_day_02(x2) & n_man(x1) & card_eq_4(x1))
hypothesis_logic: exists e1 s1 x1.(a_together(s1) & Manner(e1,s1) & Actor(e1,x1) & v_work(e1) & n_man(x1) & card_eq_4(x1))
premise_sim: exists e1 x1 x2 x3 x4.(with(x1,x3) & v_dig(e1) & rel(x1,x2) & n_observe(x2) & n_man(x1) & n_helmet(x3) & n_ground(x4) & n_date(x2) & in(e1,x4) & card_eq_4(x1) & a_date_day_02(x2) & Actor(e1,x1))
hypothesis_sim: exists e1 s1 x1.(v_work(e1) & n_man(x1) & card_eq_4(x1) & a_together(s1) & Manner(e1,s1) & Actor(e1,x1))