( ( What ( makes ( ( this surgery ) unique ) ) ) ( ( is ( that ( it ( is ( accomplished ( with ( ( ( a ( ( very small ) incision ) ) and ) ( ( the use ) ( of ( ( a ( small ( visualization instrument ) ) ) ( known ( as ( an endoscope ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (SBAR (WHNP (WP What)) (S (VP (VBZ makes) (S (NP (DT this) (NN surgery)) (ADJP (JJ unique)))))) (VP (VBZ is) (SBAR (IN that) (S (NP (PRP it)) (VP (VBZ is) (VP (VBN accomplished) (PP (IN with) (NP (NP (DT a) (ADJP (RB very) (JJ small)) (NN incision)) (CC and) (NP (NP (DT the) (NN use)) (PP (IN of) (NP (NP (DT a) (JJ small) (NN visualization) (NN instrument)) (VP (VBN known) (PP (IN as) (NP (DT an) (NN endoscope)))))))))))))) (. .)))
What makes this surgery unique is that it is accomplished with a very small incision and the use of a small visualization instrument known as an endoscope.
(ROOT (S (NP (NNS Endoscopes)) (VP (VBP are) (VP (VBN used) (S (VP (TO to) (VP (VB explore) (NP (DT the) (NN body)) (PP (IN through) (NP (NP (JJ various) (NNS orifices)) (CC or) (NP (JJ minor) (NNS incisions))))))))) (. .)))