Two women walk down a busy street together.
Woman walk down a street by some taxis.
It cannot be inferred that there are taxis  while walking down a street.
exists e1 s1 s2 x1 x2.(a_together(s2) & Manner(e1,s2) & down(e1,x2) & n_street(x2) & a_busy(s1) & Theme(s1,x2) & Actor(e1,x1) & v_walk(e1) & n_woman(x1) & card_eq_2(x1))
exists x1 x2 x3 x4.(a_topic(x1) & by(x1,x4) & n_taxi(x4) & down(x1,x3) & n_street(x3) & n_walk(x1) & (x1 = x2) & ne_nam_woman(x2))