Two young ladies in green boots are walking through an urban area while an older lady wearing black shoes follows them.
Three ladies are walking.
If we know there are two young ladies and an older lady then we already know that there are three ladies.
exists e1 p1 s1 s2 s3 x1 x2 x3.(exists e3 e2 s4 s5 x4 x5 x6.(Theme(e3,x1) & Actor(e3,x4) & v_follow(e3) & Theme(e2,x6) & Actor(e2,x5) & v_wear(e2) & n_shoe(x6) & a_black(s5) & Theme(s5,x6) & (x4 = x5) & n_lady(x4) & r_more(s4) & a_older(s4) & Theme(s4,x4)) & n_thing(x1) & while(e1,p1) & through(e1,x3) & n_area(x3) & a_urban(s3) & Theme(s3,x3) & Actor(e1,x1) & v_walk(e1) & in(x1,x2) & n_boot(x2) & a_green(s2) & Theme(s2,x2) & n_lady(x1) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 x1.(Actor(e1,x1) & v_walk(e1) & n_lady(x1) & card_eq_3(x1))