Lots of people are outside on the beach under shade.
People are having a beach party.
Not everyone is at the beach to be having a beach party
exists s1 x1 x2 x3 x4.(n_beach(x3) & on(s1,x3) & under(x3,x4) & n_shade(x4) & Theme(s1,x1) & a_outside(s1) & of(x1,x2) & n_people(x2) & n_lot(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_party(x2) & of(x2,x3) & n_beach(x3) & n_people(x1))