A young man in a green shirt is jumping with his skateboard over three steps in front of a skyscraper.
A young man in a green tank top jumps his red skateboard in front of the Sears Tower.
A shirt is not necessarily a tank top. Not all skateboards are red. The Sears Tower is a specific skyscraper but not all skyscraper's are the Sears Tower.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6.(in(e1,x5) & of(x5,x6) & n_skyscraper(x6) & n_front(x5) & with(e1,x3) & over(x3,x4) & n_step(x4) & card_eq_3(x4) & n_skateboard(x3) & of(x3,x1) & n_male(x1) & Actor(e1,x1) & v_jump(e1) & in(x1,x2) & n_shirt(x2) & a_green(s2) & Theme(s2,x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7.(ne_org_tower(x6) & (x6 = x7) & ne_org_sears(x7) & Theme(e1,x4) & Actor(e1,x1) & v_jump(e1) & in(x4,x5) & of(x5,x6) & n_front(x5) & n_skateboard(x4) & a_red(s3) & Theme(s3,x4) & of(x4,x1) & n_male(x1) & in(x1,x2) & n_top(x2) & of(x2,x3) & n_tank(x3) & a_green(s2) & Theme(s2,x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))