A little blond boy is petting a resting tiger.
a boy is at a zoo
Just because there is a tiger doesn't mean it's at the zoo, the tiger could have been at a circus.
exists e1 e2 s1 s2 x1 x2.(Theme(e2,x2) & Actor(e2,x1) & v_pet(e2) & n_tiger(x2) & Actor(e1,x2) & v_rest(e1) & n_boy(x1) & a_blond(s2) & Theme(s2,x1) & a_little(s1) & Theme(s1,x1))
exists p1 x1.(exists x2.(at(x1,x2) & n_zoo(x2)) & n_boy(x1))