A boy is jumping on a bed.
A boy jumping around.
The boy jumping on the bed would imply the boy is jumping.
exists e1 x1 x2.(on(e1,x2) & n_bed(x2) & Actor(e1,x1) & v_jump(e1) & n_boy(x1))
exists e1 s1 x1 x2.(a_topic(x1) & a_around(s1) & Manner(e1,s1) & Actor(e1,x2) & v_jump(e1) & (x1 = x2) & n_boy(x1))