( ( The ( energy release ) ) ( best ( ( indicates ( ( the ( destructive power ) ) ( of ( an earthquake ) ) ) ) . ) ) )
(ROOT (S (NP (DT The) (NN energy) (NN release)) (ADVP (RB best)) (VP (VBZ indicates) (NP (NP (DT the) (JJ destructive) (NN power)) (PP (IN of) (NP (DT an) (NN earthquake))))) (. .)))
The energy release best indicates the destructive power of an earthquake.
(ROOT (S (NP (NP (DT The) (NN rate)) (SBAR (IN that) (S (NP (NN energy)) (VP (VBZ is) (VP (VBN released)))))) (VP (VBZ is) (VP (VBN known) (PP (IN as) (NP (NN power))))) (. .)))