A man is dislodging dirt and rocks from his bulldozer.
The man is riding a jet ski.
A man cannot be dislodging dirt and rocks and riding a jet ski simultaneously.
exists e1 x1 x2 x3 x4 x5.(Theme(e1,x2) & Actor(e1,x1) & v_dislodge(e1) & subset_of(x4,x2) & from(x4,x5) & n_bulldozer(x5) & of(x5,x1) & n_male(x1) & n_rock(x4) & subset_of(x3,x2) & n_dirt(x3) & n_man(x1))
exists e1 x1 x2 x3.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_ski(x2) & of(x2,x3) & n_jet(x3))