offers an interesting bit of speculation 
(ROOT (S (VP (VBZ offers) (NP (NP (DT an) (JJ interesting) (NN bit)) (PP (IN of) (NP (NN speculation)))))))
(ROOT (S (VP (VBZ ) (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (NN )))))))