premise: An old man wearing a hat is working on a project.
hypothesis: The old man is making a rocking chair.
explanation_1: It is possible that an old man can be working on a project other than making a rocking chair.
explanation_2: A project can be anything other than making a rocking chair.
explanation_3: Not at projects are a rocking chair.
premise_logic: exists e1 e2 s1 x1 x2 x3 x4.(on(e2,x4) & n_project(x4) & Actor(e2,x1) & v_work(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_hat(x3) & (x1 = x2) & n_man(x1) & a_old(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 s1 x1 x2 x3.(n_man(x1) & a_old(s1) & Theme(s1,x1) & Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & n_chair(x2) & of(x2,x3) & n_rocking(x3))