Two kids play soccer in a field.
The two kids are friends.
Just because the kids play soccer in field doesn't necessarily mean that they are friends.
exists e1 x1 x2 x3.(in(e1,x3) & n_field(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_soccer(x2) & n_kid(x1) & card_eq_2(x1))
exists p1 x1.(n_kid(x1) & card_eq_2(x1) & exists x2.((x1 = x2) & n_friend(x2)))