An ice cream truck driver stares out the truck window.
A person is inside a vehicle.
An ice cream truck driver is a person. Someone who is staring out of a truck window implies they are inside the truck. A truck is a vehicle.
exists e1 s1 x1 x2 x3 x4 x5.(a_out(s1) & Manner(e1,s1) & Theme(e1,x5) & Actor(e1,x1) & v_stare(e1) & n_window(x5) & of(x5,x4) & n_truck(x4) & n_truck(x4) & n_driver(x1) & of(x1,x4) & of(x1,x3) & n_cream(x3) & of(x1,x2) & n_ice(x2))
exists p1 x1.(exists x2.(inside(x1,x2) & n_vehicle(x2)) & n_person(x1))