A young man with no shirt on is wearing black pants and sneakers is jumping over a blue skateboard.
The man is currently himself skateboarding.
Jumping over a skateboard doesn't imply he himself is skateboarding.
exists e1 s1 s2 s3 x1 x2 x3.(a_over(s3) & Manner(e1,s3) & Theme(e1,x3) & Actor(e1,x2) & v_jump(e1) & n_skateboard(x3) & a_blue(s2) & Theme(s2,x3) & n_sneaker(x2) & -exists e2 s4 s5 x4 x5 x6.(Theme(e2,x6) & Actor(e2,x1) & v_wear(e2) & n_pants(x6) & a_black(s5) & Theme(s5,x6) & with(x1,x4) & Theme(s4,x5) & a_on(s4) & (x4 = x5) & n_shirt(x4)) & n_man(x1) & a_young(s1) & Theme(s1,x1))
exists p1 s1 x1.(n_male(x1) & n_man(x1) & a_currently(s1) & Manner(p1,s1) & exists e1 x2.((x1 = x1) & Actor(e1,x2) & v_skateboard(e1) & (x1 = x2)))