A overweight man with shorts on about to get on a motorcycle.
A fat man hurries home to eat dinner.
A man about to get on a motorcycle does not mean he is in a hurry to get home to eat dinner. He could be going anywhere to do anything and may or may not be in a hurry.
exists e1 p1 s1 x1 x2 x3.(a_topic(x1) & with(x1,x2) & on(x2,e1) & Topic(e1,p1) & Actor(e1,x3) & v_about(e1) & exists e2 x4.(on(e2,x4) & n_motorcycle(x4) & Actor(e2,x3) & v_get(e2)) & n_thing(x3) & n_shorts(x2) & n_man(x1) & a_overweight(s1) & Theme(s1,x1))
exists p1 s1 x1 x2 x3.(a_topic(x1) & Topic(x1,p1) & exists e1 x4.(Theme(e1,x4) & Actor(e1,x1) & v_eat(e1) & n_dinner(x4)) & n_home(x1) & of(x1,x3) & n_hurry(x3) & of(x1,x2) & n_man(x2) & a_fat(s1) & Theme(s1,x1))