humiliated by a pack of dogs who are smarter than him 
(ROOT (S (VP (VBN humiliated) (PP (IN by) (NP (NP (NP (DT a) (NN pack)) (PP (IN of) (NP (NNS dogs)))) (SBAR (WHNP (WP who)) (S (VP (VBP are) (ADJP (ADJP (JJR smarter)) (PP (IN than) (NP (PRP him))))))))))))
(ROOT (S (VP (VBN ) (PP (IN ) (NP (NP (NP (DT ) (NN )) (PP (IN ) (NP (NNS )))) (SBAR (WHNP (WP )) (S (VP (VBP ) (ADJP (ADJP (JJR )) (PP (IN ) (NP (PRP ))))))))))))