People with their back to the camera walk down a wide alley.
The people are scared.
No way to know if they are scared.
exists s1 x1 x2 x3 x4 x5.(n_walk(x3) & of(x3,x4) & n_camera(x4) & a_topic(x1) & with(x1,x2) & to(x2,x3) & down(x3,x5) & n_alley(x5) & a_wide(s1) & Theme(s1,x5) & n_back(x2) & of(x2,x1) & n_thing(x1) & n_people(x1))
exists e1 x1.(n_people(x1) & Theme(e1,x1) & v_scare(e1))