( There ( ( are ( no ( external ears ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (DT no) (JJ external) (NNS ears))) (. .)))
There are no external ears.
(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))))))))) (. .)))