( ( For something ) ( ( to ( be alive ) ) ( ( remember ( that ( it ( has ( to ( meet ( ( certain criteria ) ( -LRB- ( ( characteristics ( of life ) ) -RRB- ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (PP (IN For) (NP (NN something))) (S (VP (TO to) (VP (VB be) (ADJP (JJ alive))))) (VP (VBP remember) (SBAR (IN that) (S (NP (PRP it)) (VP (VBZ has) (S (VP (TO to) (VP (VB meet) (NP (NP (JJ certain) (NNS criteria)) (PRN (-LRB- -LRB-) (NP (NP (NNS characteristics)) (PP (IN of) (NP (NN life)))) (-RRB- -RRB-)))))))))) (. .)))
For something to be alive remember that it has to meet certain criteria (characteristics of life).
(ROOT (S (NP (NP (NN Something)) (SBAR (WHNP (WDT that)) (S (VP (VBZ has) (NP (NP (DT all)) (PP (IN of) (NP (NP (DT the) (NNS characteristics)) (PP (IN of) (NP (NN life)))))))))) (VP (VBZ is) (VP (VBN considered) (S (VP (TO to) (VP (VB be) (ADJP (JJ alive))))))) (. .)))