A man sitting on the back of a truck underneath an umbrella.
A huge person sitting
A man doesn't have to be huge to be sitting on the back of a truck underneath an umbrella.
exists e1 x1 x2 x3 x4 x5.(n_back(x3) & a_topic(x1) & on(e1,x3) & of(x3,x4) & underneath(x4,x5) & n_umbrella(x5) & n_truck(x4) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1))
exists e1 s1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_person(x1) & a_huge(s1) & Theme(s1,x1))