Young people sit on the rocks beside their recreational vehicle.
Some youngsters are cooling off in the shade beside their vehicle.
Young people may or may not be youngsters, and pople that sit on the rocks does dot mean they are sitting in the sade or that they are cooling off in the shade.
exists e1 s1 s2 x1 x2 x3.(n_vehicle(x3) & a_recreational(s2) & Theme(s2,x3) & of(x3,x2) & n_thing(x2) & n_rock(x2) & beside(e1,x3) & on(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(n_vehicle(x3) & of(x3,x2) & n_thing(x2) & n_shade(x2) & beside(e1,x3) & in(e1,x2) & a_off(s1) & Manner(e1,s1) & Actor(e1,x1) & v_cool(e1) & n_youngster(x1))