Two guys are trying to catch a basketball; one guy has a Celtics jersey on and the other guy has a red jersey and a black hat.
Some people are playing a sport outside.
Just because someone catches a baseball it doesn't mean they're playing a sport outside, they might be watching a baseball game inside.
exists e2 e1 e3 p1 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7.(Theme(e3,x5) & Actor(e3,x2) & v_have(e3) & subset_of(x7,x5) & n_hat(x7) & a_black(s3) & Theme(s3,x7) & subset_of(x6,x5) & n_jersey(x6) & a_red(s2) & Theme(s2,x6) & -(x2 = x1) & n_guy(x1) & n_guy(x1) & n_guy(x2) & n_guy(x2) & a_on(s1) & Manner(e2,s1) & Theme(e2,x3) & Actor(e2,x2) & v_have(e2) & n_jersey(x3) & (x3 = x4) & ne_nam_celtics(x4) & card_eq_1(x2) & Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e4 x8.(Theme(e4,x8) & Actor(e4,x1) & v_catch(e4) & n_basketball(x8)) & card_eq_2(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_outside(x2) & of(x2,x3) & n_sport(x3) & n_people(x1))