A crowd of young people are dancing in the dark.
Some people are together without any light
Young people are people and dark implies without any light.
exists e1 s1 x1 x2 x3.(n_dark(x3) & in(e1,x3) & Actor(e1,x1) & v_dance(e1) & of(x1,x2) & n_people(x2) & a_young(s1) & Theme(s1,x2) & n_crowd(x1))
exists s1 x1.(-all x2.(n_light(x2) -> with(s1,x2)) & Theme(s1,x1) & a_together(s1) & n_people(x1))