premise: A middle-aged man works under the engine of a train on rail tracks.
hypothesis: A guy is working on a train.
explanation_1: The guy is middle-aged.
explanation_2: Middle-aged man is a type of guy, and works under is a paraphrase of working.
explanation_3: A middle-aged man and guy suggest the same type of individual by age and gender.
premise_logic: exists s1 x1 x2 x3 x4 x5 x6.(n_engine(x3) & a_topic(x1) & under(x1,x3) & of(x3,x4) & on(x4,x5) & n_track(x5) & of(x5,x6) & n_rail(x6) & n_train(x4) & n_work(x1) & of(x1,x2) & n_man(x2) & a_middle-aged(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 x1 x2.(on(e1,x2) & n_train(x2) & Actor(e1,x1) & v_work(e1) & n_guy(x1))