People on a walking trail at dusk with a long bridge in the background.
The walking trail is completely empty in the middle of the night.
a trail cannot be empty with people on it
exists s1 x1 x2 x3 x4 x5 x6.(n_background(x6) & a_topic(x1) & with(x1,x5) & in(x5,x6) & n_bridge(x5) & a_long(s1) & Theme(s1,x5) & at(x1,x4) & n_dusk(x4) & on(x1,x2) & n_trail(x2) & of(x2,x3) & n_walking(x3) & n_people(x1))
exists s1 x1 x2 x3 x4.(n_night(x4) & n_middle(x3) & n_trail(x1) & of(x1,x2) & n_walking(x2) & in(s1,x3) & of(x3,x4) & r_completely(s1) & Theme(s1,x1) & a_empty(s1))