A boy wearing khaki pants and a sports team jersey is jumping down the stairs outside.
A boy is celebrating his team winning by jumping on the stairs outside.
The boy is jumping down the stairs but that doesn't necessarily mean that he is celebrating his team winning.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8 x9.(n_stair(x9) & a_outside(s2) & Manner(e2,s2) & a_down(s1) & Manner(e2,s1) & Theme(e2,x9) & Actor(e2,x1) & v_jump(e2) & subset_of(x6,x1) & n_jersey(x6) & of(x6,x8) & n_team(x8) & of(x6,x7) & n_sport(x7) & subset_of(x2,x1) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & n_pants(x4) & of(x4,x5) & n_khaki(x5) & (x2 = x3) & n_boy(x2))
exists e1 e3 e2 s1 x1 x2 x3 x4.(n_stair(x4) & Theme(e3,x2) & Actor(e3,x1) & v_celebrate(e3) & by(e1,e2) & a_outside(s1) & Manner(e2,s1) & on(e2,x4) & Actor(e2,x3) & v_jump(e2) & Actor(e1,x3) & v_win(e1) & (x2 = x3) & n_team(x2) & of(x2,x1) & n_male(x1) & n_boy(x1))