Two Bicyclist riding on a street with trees and high rises.
Everybody is walking.
If people are riding bicycles, not every everybody is walking.
exists s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & with(x1,x4) & subset_of(x6,x4) & n_rise(x6) & a_high(s1) & Theme(s1,x6) & subset_of(x5,x4) & n_tree(x5) & on(x1,x3) & n_street(x3) & n_riding(x1) & of(x1,x2) & n_bicyclist(x2) & card_eq_2(x1))
all x1.(n_person(x1) -> exists e1.(Actor(e1,x1) & v_walk(e1)))