premise: A man sitting at a desk, repairing antique typewriters.
hypothesis: a man sits
explanation_1: "A man sits"is a rephrasing of "a man sitting".
explanation_2: Sitting is a paraphrase of sits.
explanation_3: a man sitting is rephrasing f a man sits
premise_logic: exists e1 e2 s1 x1 x2 x3 x4 x5.(a_topic(x1) & Theme(e2,x5) & Actor(e2,x4) & v_repair(e2) & n_typewriter(x5) & a_antique(s1) & Theme(s1,x5) & (x1 = x4) & at(e1,x3) & n_desk(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1))
hypothesis_logic: exists e1 x1.(Actor(e1,x1) & v_sit(e1) & n_man(x1))