A man wearing a face mask sits near a tent and a trailer.
A serial killer wearing a mask is in the campsite.
A man does not imply being a serial killer.
exists e2 e1 x1 x2 x3 x4 x5 x6 x7.(near(e2,x5) & subset_of(x7,x5) & n_trailer(x7) & subset_of(x6,x5) & n_tent(x6) & Actor(e2,x1) & v_sit(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_mask(x3) & of(x3,x4) & n_face(x4) & (x1 = x2) & n_man(x1))
exists e1 p1 s1 x1 x2 x3 x4.(n_campsite(x4) & in(x1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_mask(x3) & (x1 = x2) & n_killer(x1) & a_serial(s1) & Theme(s1,x1))