sink it faster than a leaky freighter 
(ROOT (S (VP (VB sink) (NP (PRP it)) (ADVP (ADVP (JJR faster)) (PP (IN than) (NP (DT a) (JJ leaky) (NN freighter)))))))
(ROOT (S (VP (VB ) (NP (PRP )) (ADVP (ADVP (JJR )) (PP (IN ) (NP (DT ) (JJ ) (NN )))))))