A pilot is leaving a home.
The pilot is leaving on a tour of Iraq.
Leaving a home does not imply leaving on a tour of Iraq.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_leave(e1) & n_home(x2) & n_pilot(x1))
exists e1 x1 x2 x3.(ne_geo_iraq(x3) & n_pilot(x1) & on(e1,x2) & of(x2,x3) & n_tour(x2) & Actor(e1,x1) & v_leave(e1))