A man drives a yellow vehicle.
The man hits a bike.
Drives a yellow vehicle does not mean hits a bike.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & n_vehicle(x2) & a_yellow(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_hit(e1) & n_bike(x2))