A boy holding a stick jumps over a small channel.
A boy skipping stones.
Jumping over a small channel and skipping stones are two completely different activities. Jumping over a small channel involves the feet leaving the ground momentarily while skipping stones requires a stone to be skipped on the land or in water and does not involve jumping.
exists e2 e1 s1 x1 x2 x3 x4.(over(e2,x4) & n_channel(x4) & a_small(s1) & Theme(s1,x4) & Actor(e2,x1) & v_jump(e2) & Theme(e1,x3) & Actor(e1,x2) & v_hold(e1) & n_stick(x3) & (x1 = x2) & n_boy(x1))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_skip(e1) & n_stone(x3) & (x1 = x2) & n_boy(x1))