A family sits at a park while birds fly around.
A family is together.
A family sits at a park implies that they are together.
exists e1 p1 x1 x2.(exists e2 s1 x3.(a_around(s1) & Manner(e2,s1) & Actor(e2,x3) & v_fly(e2) & n_bird(x3)) & while(e1,p1) & at(e1,x2) & n_park(x2) & Actor(e1,x1) & v_sit(e1) & n_family(x1))
exists s1 x1.(Theme(s1,x1) & a_together(s1) & n_family(x1))