two people playing basketball.
Two members of the same team are practicing for an upcoming basketball game.
Two people are playing basketball but that does not imply that they are two members of the same team. The two people could just be having fun and aren't necessarily practicing for an upcoming basketball game.
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_basketball(x3) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 s1 s2 x1 x2 x3 x4.(n_team(x2) & a_same(s1) & Theme(s1,x2) & for(e1,x3) & n_game(x3) & of(x3,x4) & n_basketball(x4) & a_upcoming(s2) & Theme(s2,x3) & Actor(e1,x1) & v_practice(e1) & of(x1,x2) & n_member(x1) & card_eq_2(x1))