Young people sit on the rocks beside their recreational vehicle.
There are people resting from driving an RV.
People sitting are not always resting. The people may not have yet driven the RV, we cannot be sure they are resting from driving.
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 p1 x1 e1 e2 x2 x3 x4 x5.((x1 = x2) & from(e1,e2) & Theme(e2,x5) & Actor(e2,x4) & v_drive(e2) & n_rv(x5) & Actor(e1,x3) & v_rest(e1) & (x2 = x3) & n_people(x2))