A number of people of various ages sit on blankets on the grass.
Many people sit on blankets in the grass.
Many people and a number of people are different ways of saying the same things.
exists e1 s1 x1 x2 x3 x4 x5.(n_grass(x5) & on(e1,x5) & on(e1,x4) & n_blanket(x4) & Actor(e1,x1) & v_sit(e1) & of(x1,x3) & n_age(x3) & a_various(s1) & Theme(s1,x3) & of(x1,x2) & n_people(x2) & n_number(x1))
exists e1 x1 x2 x3.(n_grass(x3) & in(e1,x3) & on(e1,x2) & n_blanket(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & n_quantity(x1))