A man and a boy sit next to an airport window while a large jet airplane waits outside.
A man and his boy are sitting at an airport waiting for their flight.
A boy does not imply it is the mans boy and to sit does not imply they are waiting for their flight.
exists e1 p1 s1 s2 x1 x2 x3 x4 x5 x6.(a_outside(s2) & Manner(e1,s2) & while(e1,x4) & n_wait(x4) & of(x4,x6) & n_airplane(x6) & of(x4,x5) & n_jet(x5) & a_large(s1) & Theme(s1,x4) & exists s3 x7 x8.(to(s3,x7) & n_window(x7) & of(x7,x8) & n_airport(x8) & Theme(s3,x1) & a_next(s3)) & Topic(e1,p1) & Actor(e1,x1) & v_sit(e1) & subset_of(x3,x1) & n_boy(x3) & subset_of(x2,x1) & n_man(x2))
exists e1 e2 x1 x2 x3 x4 x5.(for(e1,e2) & for(e2,x5) & n_flight(x5) & of(x5,x2) & n_thing(x2) & Actor(e2,x1) & v_wait(e2) & at(e1,x4) & n_airport(x4) & Actor(e1,x1) & v_sit(e1) & subset_of(x3,x1) & n_boy(x3) & of(x3,x2) & n_male(x2) & subset_of(x2,x1) & n_man(x2))