The man, the wife and the son are playing together.
The kid is playing with two adults.
Son in this context implies a kid, while man and wife certainly implies two adults.
exists e1 s1 x1 x2 x3 x4 x5.(n_son(x5) & n_wife(x4) & n_man(x2) & a_together(s1) & Manner(e1,s1) & Actor(e1,x1) & v_play(e1) & subset_of(x3,x1) & subset_of(x5,x3) & subset_of(x4,x3) & subset_of(x2,x1))
exists e1 x1 x2.(n_kid(x1) & with(e1,x2) & n_adult(x2) & card_eq_2(x2) & Actor(e1,x1) & v_play(e1))