Parents with young children sitting at a picnic table.
Some humans sitting.
rephrasing of the the family sitting
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & with(x1,x2) & at(e1,x4) & n_table(x4) & of(x4,x5) & n_picnic(x5) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_child(x2) & a_young(s1) & Theme(s1,x2) & n_parent(x1))
exists e1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_human(x1))