Men and women walking down a sidewalk.
The sidewalk is crowded.
Sentence 1 is missing crowded sidewalk
exists e1 s1 s2 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & a_down(s2) & Manner(e1,s2) & Theme(e1,x4) & Actor(e1,x3) & v_walk(e1) & n_sidewalk(x4) & (x2 = x3) & n_woman(x2) & subset_of(x1,s1) & n_man(x1))
exists e1 x1.(n_sidewalk(x1) & Theme(e1,x1) & v_crowd(e1))