police questioning the driver of a black wagon at nighttime.
The police is questioning someone in the day time.
Nighttime is a different time of day than the day time.
exists e1 s1 x1 x2 x3 x4.(n_driver(x2) & at(e1,x4) & n_nighttime(x4) & Theme(e1,x2) & Actor(e1,x1) & v_question(e1) & of(x2,x3) & n_wagon(x3) & a_black(s1) & Theme(s1,x3) & n_police(x1))
exists e1 x1 x2 x3 x4.(n_time(x3) & of(x3,x4) & n_day(x4) & n_police(x1) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_question(e1) & n_person(x2))