A group of people on a large boulder all wearing life vests.
These people are standing on a large boulder
both statements say that there are people on a large boulder.
all x1 x4 s1 x3 x2.(((x1 = x2) & on(x2,x4) & n_boulder(x4) & a_large(s1) & Theme(s1,x4) & of(x2,x3) & n_people(x3) & n_group(x2)) -> exists e1 x5 x6 x7.(a_topic(x1) & Theme(e1,x6) & Actor(e1,x5) & v_wear(e1) & n_vest(x6) & of(x6,x7) & n_life(x7) & (x1 = x5)))
exists e1 s1 x1 x2.(n_people(x1) & on(e1,x2) & n_boulder(x2) & a_large(s1) & Theme(s1,x2) & Actor(e1,x1) & v_stand(e1))