A crowd watching air balloons at night.
A crowd watches an air balloon race.
A crowd watching air balloons at night does not indicate that they watches an air balloon race.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & at(e1,x5) & n_night(x5) & Theme(e1,x3) & Actor(e1,x2) & v_watch(e1) & n_balloon(x3) & of(x3,x4) & n_air(x4) & (x1 = x2) & n_crowd(x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_race(x2) & of(x2,x4) & n_balloon(x4) & of(x2,x3) & n_air(x3) & n_crowd(x1))