A group of people eat a meal in a crowded outdoor location.
The people are outside eating and  celebrating a birthday.
A group eating outside might not be celebrating a birthday.
exists e1 s1 x1 x2 x3 x4 x5.(in(e1,x4) & n_location(x4) & of(x4,x5) & n_outdoor(x5) & a_crowded(s1) & Theme(s1,x4) & Theme(e1,x3) & Actor(e1,x1) & v_eat(e1) & n_meal(x3) & of(x1,x2) & n_people(x2) & n_group(x1))
exists p1 x1.(n_people(x1) & exists e1 s1 x2 x3 x4 x5.((x1 = x2) & subset_of(e1,x2) & Theme(e1,x5) & Actor(e1,x4) & v_celebrate(e1) & n_birthday(x5) & n_thing(x4) & subset_of(x3,x2) & n_eating(x3) & a_outside(s1) & Theme(s1,x3)))