premise: construction worker working on a structure
hypothesis: A man is working on a computer.
explanation_1: a computer is a mechanical device, not a structure
explanation_2: The worker can not work on the structure and the computer at the same time.  The man is either working on the structure or working on the computer.
explanation_3: A structure isn't a computer.
premise_logic: exists e1 x1 x2 x3.(on(e1,x3) & n_structure(x3) & Actor(e1,x1) & v_work(e1) & n_worker(x1) & of(x1,x2) & n_construction(x2))
hypothesis_logic: exists e1 x1 x2.(on(e1,x2) & n_computer(x2) & Actor(e1,x1) & v_work(e1) & n_man(x1))
premise_sim: exists e1 x1 x2 x3.(v_work(e1) & on(e1,x3) & of(x1,x2) & n_worker(x1) & n_structure(x3) & n_construction(x2) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2.(v_work(e1) & on(e1,x2) & n_man(x1) & n_computer(x2) & Actor(e1,x1))