a technical triumph and an extraordinary bore . 
(ROOT (NP (NP (DT a) (JJ technical) (NN triumph)) (CC and) (NP (DT an) (JJ extraordinary) (NN bore)) (. .)))
(ROOT (NP (NP (DT ) (JJ ) (NN )) (CC ) (NP (DT ) (JJ ) (NN )) (. )))