( ( The ( bony growths ) ) ( ( are ( ( a ( compensatory response ) ) ( to ( irritation ( of ( the ( external ( ear ( canal bone ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ bony) (NNS growths)) (VP (VBP are) (NP (NP (DT a) (ADJP (JJ compensatory)) (NN response)) (PP (TO to) (NP (NP (NN irritation)) (PP (IN of) (NP (DT the) (JJ external) (NN ear) (NN canal) (NN bone))))))) (. .)))
The bony growths are a compensatory response to irritation of the external ear canal bone.
(ROOT (S (NP (DT The) (NNS ears)) (VP (VBP are) (NP (NP (DT an) (JJ external) (NN feature)) (PP (IN in) (NP (JJ human) (NNS beings))) (SBAR (S (VP (VBZ is) (ADJP (JJ responsible) (PP (IN for) (NP (NN balance))))))))) (. .)))