Young girl in white dress walks around a fountain.
A girl is walking.
A girl could be a young girl. "Is walking" is a rephrasing of "walks".
exists e1 s1 s2 x1 x2 x3.(around(e1,x3) & n_fountain(x3) & Actor(e1,x1) & v_walk(e1) & in(x1,x2) & n_dress(x2) & a_white(s2) & Theme(s2,x2) & n_girl(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1.(Actor(e1,x1) & v_walk(e1) & n_girl(x1))