A man uses a drill on his mountain bike spokes.
The man rides his bike down the street.
One cannot be using a drill on bike spokes and riding a bike at the same time.
exists e1 x1 x2 x3 x4 x5.(on(e1,x3) & n_spoke(x3) & of(x3,x5) & n_bike(x5) & of(x3,x4) & n_mountain(x4) & of(x3,x1) & n_male(x1) & Theme(e1,x2) & Actor(e1,x1) & v_use(e1) & n_drill(x2) & n_man(x1))
exists e1 x1 x2 x3.(n_street(x3) & n_bike(x2) & of(x2,x1) & n_male(x1) & n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & down(x2,x3))