( Competition ( ( ( is ( in ( ( the form ) ( of ( ( questions and ) answers ) ) ) ) ) ( using ( ( ( round robin ) and ) ( double elimination ) ) ) ) . ) )
(ROOT (S (NP (NN Competition)) (VP (VBZ is) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (NNS questions) (CC and) (NNS answers))))) (S (VP (VBG using) (NP (NP (NN round) (NN robin)) (CC and) (NP (VB double) (NN elimination)))))) (. .)))
Competition is in the form of questions and answers using round robin and double elimination.
(ROOT (S (NP (NP (QP (DT Half))) (PP (IN of) (NP (NP (DT the) (NNS neurons)) (VP (VBN formed) (PP (IN in) (NP (DT the) (NN embryo))))))) (VP (VBP are) (VP (VBN eliminated) (PP (RB because) (IN of) (NP (NN competition)))))))