premise: A man in a yellow excavator on a construction site.
hypothesis: the guy is on the excavator
explanation_1: Man is guy, and yellow excavator is a type of excavator.
explanation_2: A man is a guy and can be on an excavator on a construction site.
explanation_3: A man is on a excavator and a excavator is used on construction sites.
premise_logic: exists s1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & on(x2,x3) & n_site(x3) & of(x3,x4) & n_construction(x4) & n_excavator(x2) & a_yellow(s1) & Theme(s1,x2) & n_man(x1))
hypothesis_logic: exists p1 x1 x2.(n_excavator(x2) & n_guy(x1) & on(x1,x2))