A crowd of people are standing outside next to a canal at night with boats passing by.
The boats on the canal are green
The boats are not necessarily green
exists e1 e2 s1 s2 x1 x2 x3 x4 x5.(a_by(s2) & Manner(e2,s2) & Actor(e2,x5) & v_pass(e2) & with(e1,x5) & n_boat(x5) & at(e1,x4) & n_night(x4) & to(e1,x3) & n_canal(x3) & r_next(e1) & a_outside(s1) & Manner(e1,s1) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_people(x2) & n_crowd(x1))
exists s1 x1 x2.(n_canal(x2) & n_boat(x1) & Theme(s1,x1) & a_green(s1) & on(x1,x2))