A man in a red truck is staring out the driver-side window.
A tall person is staring
Not all humans are tall, some are short.
exists e1 s1 s2 x1 x2 x3 x4.(n_window(x3) & of(x3,x4) & n_driver-side(x4) & a_out(s2) & Manner(e1,s2) & Theme(e1,x3) & Actor(e1,x1) & v_stare(e1) & in(x1,x2) & n_truck(x2) & a_red(s1) & Theme(s1,x2) & n_man(x1))
exists e1 s1 x1.(Actor(e1,x1) & v_stare(e1) & n_person(x1) & a_tall(s1) & Theme(s1,x1))