Middle-aged man in shorts and a hat sits while reading a book.
A man is driving a school bus.
A man can't (or at shouldn't) be reading a book and driving a school bus at the same time.
exists e2 e1 s1 x1 x2 x3 x4 x5.(while(e1,e2) & Theme(e2,x5) & Actor(e2,x1) & v_read(e2) & n_book(x5) & Actor(e1,x1) & v_sit(e1) & subset_of(x4,x1) & n_hat(x4) & subset_of(x2,x1) & in(x2,x3) & n_shorts(x3) & n_man(x2) & a_middle-aged(s1) & Theme(s1,x2))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & n_bus(x2) & of(x2,x3) & n_school(x3) & n_man(x1))