Two street vendors sit on the sidewalk and wait for customers.
Two dancers are dancing.
The same subjects cannot be dancing and also people who sit.
exists e1 x1 x2 x3 x4 x5 x6.(n_wait(x5) & n_sidewalk(x4) & subset_of(x5,x3) & subset_of(x4,x3) & for(e1,x6) & n_customer(x6) & on(e1,x3) & Actor(e1,x1) & v_sit(e1) & n_vendor(x1) & of(x1,x2) & n_street(x2) & card_eq_2(x1))
exists e1 x1.(Actor(e1,x1) & v_dance(e1) & n_dancer(x1) & card_eq_2(x1))