premise: Seven men are preparing to operate a helicopter
hypothesis: There are men at the helicopter.
explanation_1: Since men are clearly preparing to operate it, they must be at it.
explanation_2: There are both men in the helicopter.
explanation_3: men preparing to operate a helicopter are at the helicopter, that is why sentence 2 follows 1.
premise_logic: exists e1 p1 x1 x2.(Topic(e1,p1) & Actor(e1,x1) & v_prepare(e1) & exists e2 x3.(Theme(e2,x3) & Actor(e2,x1) & v_operate(e2) & n_helicopter(x3)) & n_man(x1) & (x1 = x2) & ne_nam_seven(x2))
hypothesis_logic: exists p1 x1 x3.(n_helicopter(x3) & exists x2.((x1 = x2) & at(x2,x3) & n_man(x2)))
premise_sim: exists e1 p1 x1 x2.(v_prepare(e1) & ne_nam_seven(x2) & n_man(x1) & exists e2 x3.(v_operate(e2) & n_helicopter(x3) & Theme(e2,x3) & Actor(e2,x1)) & Topic(e1,p1) & Actor(e1,x1) & (x1 = x2))
hypothesis_sim: exists x1 x3.(n_helicopter(x3) & exists x2.(n_man(x2) & at(x2,x3) & (x1 = x2)))