two dancers dance together.
Two dancers sit together.
One does not typically dance and sit at the same time.
exists e1 p1 x1.(exists s1.(Theme(s1,x1) & a_together(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_dance(e1) & n_dancer(x1) & card_eq_2(x1))
exists e1 s1 x1.(a_together(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1) & n_dancer(x1) & card_eq_2(x1))