premise: A man is using a jackhammer to work on a sidewalk.
hypothesis: A man breaks concrete.
explanation_1: Not all sidewalks are necessarily made of concrete. Just because a man is using a jackhammer to work on a sidewalk doesn't necessarily mean the man breaks concrete.
premise_logic: exists e1 p1 x1 x2.(Theme(e1,p1) & Recipient(e1,x2) & Actor(e1,x1) & v_use(e1) & exists e2 x3.(on(e2,x3) & n_sidewalk(x3) & Actor(e2,x1) & v_work(e2)) & n_jackhammer(x2) & n_man(x1))
hypothesis_logic: exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_break(e1) & n_concrete(x2) & n_man(x1))
premise_sim: exists e1 p1 x1 x2.(v_use(e1) & n_man(x1) & n_jackhammer(x2) & exists e2 x3.(v_work(e2) & on(e2,x3) & n_sidewalk(x3) & Actor(e2,x1)) & Theme(e1,p1) & Recipient(e1,x2) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2.(v_break(e1) & n_man(x1) & n_concrete(x2) & Theme(e1,x2) & Actor(e1,x1))