The bike rider jumps off a rock.
The bike rider is sleeping.
A person can't jump off anything and be sleeping at the same time.
exists e1 s1 x1 x2 x3.(n_rider(x1) & of(x1,x2) & n_bike(x2) & a_off(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x1) & v_jump(e1) & n_rock(x3))
exists e1 x1 x2.(n_rider(x1) & of(x1,x2) & n_bike(x2) & Actor(e1,x1) & v_sleep(e1))