( ( Single ( mode fiber ) ) ( ( can ( ( transmit ( ( a signal ) ( over ( ( ( a ( ( much greater ) distance ) ) , ) ( ( ( typically ( 20,000 meters ) ) and ) ( as far ) ) ) ) ) ) ( as ( 80,000 meters ) ) ) ) . ) )
(ROOT (S (NP (JJ Single) (NN mode) (NN fiber)) (VP (MD can) (VP (VB transmit) (NP (NP (DT a) (NN signal)) (PP (IN over) (NP (NP (DT a) (ADJP (RB much) (JJR greater)) (NN distance)) (, ,) (ADVP (ADVP (ADVP (RB typically)) (NP (CD 20,000) (NNS meters))) (CC and) (ADVP (RB as) (RB far)))))) (PP (IN as) (NP (CD 80,000) (NNS meters))))) (. .)))
Single mode fiber can transmit a signal over a much greater distance, typically 20,000 meters and as far as 80,000 meters.
(ROOT (S (NP (JJ Meter) (JJ much) (NN distance)) (VP (MD can) (VP (VB beta) (NP (JJ particles) (NN travel)) (PP (IN through) (NP (NN air))))) (. .)))