A parade of women in blue costumes walk down the street.
A group of woman dressed up as mermaids in a parade.
The women are in blue costumes but they aren't necessarily dressed up as mermaids. Just because they are walking down the street doesn't mean that the women are in a parade.
exists e1 s1 x1 x2 x3 x4.(n_street(x4) & down(e1,x4) & Actor(e1,x1) & v_walk(e1) & of(x1,x2) & in(x2,x3) & n_costume(x3) & a_blue(s1) & Theme(s1,x3) & n_woman(x2) & n_parade(x1))
exists e1 s1 x1 x2 x3 x4.(in(e1,x4) & n_parade(x4) & a_up(s1) & Manner(e1,s1) & as(e1,x3) & n_mermaid(x3) & Theme(e1,x1) & v_dress(e1) & of(x1,x2) & n_woman(x2) & n_group(x1))