A mass of people walk through the park.
There are many people in this picture.
Mass of people are many people.
exists e1 x1 x2 x3 x4.(n_park(x4) & a_topic(x1) & of(x1,x2) & through(e1,x4) & Theme(e1,x3) & v_walk(e1) & (x2 = x3) & n_people(x2) & n_mass(x1))
exists p1 x1 x2.(n_picture(x2) & in(p1,x2) & exists x3.((x1 = x3) & n_people(x3) & n_quantity(x3)))