A flight crew member is leaning out of the plane's cockpit window trying to clean the windshield.
Someone is cleaning some glass.
A crew member trying to clean the windshield means they are cleaning some glass.
exists e1 e2 p1 x1 x2 x3 x4 x5 x6 x7 x8.(n_windshield(x8) & n_window(x5) & of(x5,x6) & n_cockpit(x6) & of(x5,x4) & n_plane(x4) & of(e1,x5) & Topic(e2,p1) & Actor(e2,x7) & v_try(e2) & exists e3.(Theme(e3,x8) & Actor(e3,x7) & v_clean(e3)) & (x5 = x7) & r_out(e1) & Actor(e1,x1) & v_lean(e1) & n_member(x1) & of(x1,x3) & n_crew(x3) & of(x1,x2) & n_flight(x2))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_clean(e1) & n_glass(x2) & n_person(x1))