A group of people playing a board game.
Four people were playing cards against humanity.
There is no indication that their are exactly four people in the group. Just because they are playing a board game, does not mean that they are playing cards against humanity.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & of(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & n_game(x4) & of(x4,x5) & n_board(x5) & (x2 = x3) & n_people(x2) & n_group(x1))
exists e1 x1 x2 x3.(against(e1,x3) & n_humanity(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_card(x2) & n_people(x1) & card_eq_4(x1))