A group of people are enjoying their meal.
A lonely person takes a walk near a park.
People is plural, person is singular.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_enjoy(e1) & n_meal(x3) & of(x3,x1) & n_thing(x1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & near(x2,x3) & n_park(x3) & n_walk(x2) & n_person(x1) & a_lonely(s1) & Theme(s1,x1))