A man, woman, and child enjoying themselves on a beach.
A child with mom and dad, on summer vacation at the beach.
A man and a woman with a child are not necessarily its mom and dad. A man, woman, and child at a beach are not necessarily on summer vacation.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(n_group(x6) & a_topic(s1) & subset_of(x4,s1) & on(e1,x7) & n_beach(x7) & Theme(e1,x6) & Actor(e1,x5) & v_enjoy(e1) & (x4 = x5) & n_child(x4) & subset_of(x1,s1) & n_woman(x3) & n_man(x2) & subset_of(x3,x1) & subset_of(x2,x1))
exists x1 x2 x3 x4 x5 x6 x7.(n_beach(x7) & a_topic(x1) & on(x1,x5) & at(x5,x7) & n_vacation(x5) & of(x5,x6) & n_summer(x6) & with(x1,x2) & n_dad(x4) & n_mom(x3) & subset_of(x4,x2) & subset_of(x3,x2) & n_child(x1))