A man sits in front of his laptop.
A man is sitting in front of his laptop looking at the screen.
You can not infer he is looking at the screen.
exists e1 x1 x2 x3.(in(e1,x2) & of(x2,x3) & n_laptop(x3) & of(x3,x1) & n_male(x1) & n_front(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
exists e1 e2 x1 x2 x3 x4.(n_screen(x4) & for(e1,e2) & at(e2,x4) & Actor(e2,x1) & v_look(e2) & in(e1,x2) & of(x2,x3) & n_laptop(x3) & of(x3,x1) & n_male(x1) & n_front(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))