premise: Three people in t-shirt, yellow helmets and harnesses begin to climb ladder.
hypothesis: Three people walk up the stairs.
explanation_1: The people can't go up the stairs while they climb a ladder.
explanation_2: The people cannot walk up the stairs and climb a ladder at the same time.
explanation_3: The three people either climb ladder or walk up the stairs.
premise_logic: exists e1 p1 s1 s2 s3 x1 x2 x3 x4.(Topic(e1,p1) & Actor(e1,x1) & v_begin(e1) & exists e2 x5.(Theme(e2,x5) & Actor(e2,x1) & v_climb(e2) & n_ladder(x5)) & in(x1,x2) & n_harness(x4) & n_helmet(x3) & subset_of(x4,x2) & subset_of(x3,x2) & a_yellow(s3) & Theme(s3,x2) & a_,(s2) & Theme(s2,x2) & a_t-shirt(s1) & Theme(s1,x2) & n_people(x1) & card_eq_3(x1))
hypothesis_logic: exists e1 x1 x2.(n_stair(x2) & up(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_people(x1) & card_eq_3(x1))