A man in a large red truck.
A tall human in a truck
Not all humans are tall, some are short.
exists s1 s2 x1 x2.(a_topic(x1) & in(x1,x2) & n_truck(x2) & a_red(s2) & Theme(s2,x2) & a_large(s1) & Theme(s1,x2) & n_man(x1))
exists s1 x1 x2.(a_topic(x1) & in(x1,x2) & n_truck(x2) & n_human(x1) & a_tall(s1) & Theme(s1,x1))