Two boys are ready to receive a ball at a tennis match.
Two boys in different colored jerseys are at a tennis match.
Just because two boys are at a tennis match together does not mean they are going to be wearing different colored jerseys.
exists p1 s1 x1.(Topic(s1,p1) & Actor(s1,x1) & a_ready(s1) & exists e1 x2 x3 x4.(at(e1,x3) & n_match(x3) & of(x3,x4) & n_tennis(x4) & Theme(e1,x2) & Actor(e1,x1) & v_receive(e1) & n_ball(x2)) & n_boy(x1) & card_eq_2(x1))
exists p1 s1 s2 x1 x2 x3.(n_jersey(x3) & a_colored(s2) & Theme(s2,x3) & exists x4 x5.(at(x1,x4) & n_match(x4) & of(x4,x5) & n_tennis(x5)) & in(x1,x2) & -(x2 = x3) & n_jersey(x2) & a_colored(s1) & Theme(s1,x2) & n_boy(x1) & card_eq_2(x1))