A man sits in front of his laptop.
The man is swimming in the middle of the ocean by himself.
Swimming is not sitting.
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 x1 x2 x3.(n_male(x2) & n_ocean(x3) & n_middle(x2) & n_man(x1) & by(e1,x2) & in(e1,x2) & of(x2,x3) & Actor(e1,x1) & v_swim(e1))