Two people playing with a Frisbee.
Two people are playing frisbee golf.
People can play frisbee without playing frisbee golf.
exists e1 x1 x2 x3.(a_topic(x1) & with(e1,x3) & n_frisbee(x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_golf(x2) & a_frisbee(s1) & Theme(s1,x2) & n_people(x1) & card_eq_2(x1))