sentence1_binary_parse: ( ( Introduction ( to ( ( ( ( ( ( ( ( ( ( the neuron ) , ) synapse ) , ) ( nerve conduction ) ) , ) ( cell threshold ) ) , ) and ) ( feedback system ) ) ) ) . )
sentence1_parse: (ROOT (S (VP (VBN Introduction) (PP (TO to) (NP (NP (DT the) (NN neuron)) (, ,) (NP (NN synapse)) (, ,) (NP (NN nerve) (NN conduction)) (, ,) (NP (NN cell) (NN threshold)) (, ,) (CC and) (NP (NN feedback) (NN system))))) (. .)))
sentence1: Introduction to the neuron, synapse, nerve conduction, cell threshold, and feedback system.
sentence2_parse: (ROOT (S (NP (DT The) (DT the) (NN synapse)) (VP (VBZ is) (NP (NP (DT the) (NN space)) (PP (IN between) (NP (NP (DT a) (NN neuron)) (CC and) (NP (DT the) (JJ next) (NN cell)))))) (. .)))
sentence2: The the synapse is the space between a neuron and the next cell.