A couple converses at a table in a bar.
The couple are married.
Not all couples are married.
exists e1 x1 x2 x3.(at(e1,x2) & in(x2,x3) & n_bar(x3) & n_table(x2) & Actor(e1,x1) & v_converse(e1) & n_couple(x1))
exists e1 x1.(n_couple(x1) & Theme(e1,x1) & v_marry(e1))