A person holding a large bunch of colorful balloons jumps in the snow.
The kid is outside with balloons.
Sentence 1 does not tell you that the " person " is a kid. Sentence 2 adds this information.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6.(n_snow(x6) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_hold(e1) & of(x3,x4) & in(x4,x6) & n_jump(x4) & of(x4,x5) & n_balloon(x5) & a_colorful(s2) & Theme(s2,x4) & n_bunch(x3) & a_large(s1) & Theme(s1,x3) & (x1 = x2) & n_person(x1))
exists s1 x1 x2.(n_kid(x1) & with(s1,x2) & n_balloon(x2) & Theme(s1,x1) & a_outside(s1))