( ( ( acidophile - ) ( Organism ( that ( ( grows ( best ( under ( acid conditions ) ) ) ) ( -LRB- ( ( down ( to ( ( a pH ) ( of 1 ) ) ) ) -RRB- ) ) ) ) ) ) . )
(ROOT (NP (NP (NN acidophile)) (: -) (NP (NP (NNP Organism)) (SBAR (WHNP (WDT that)) (S (VP (VBZ grows) (PP (ADVP (RB best)) (IN under) (NP (JJ acid) (NNS conditions))) (PRN (-LRB- -LRB-) (ADVP (RB down) (PP (TO to) (NP (NP (DT a) (NN pH)) (PP (IN of) (NP (CD 1)))))) (-RRB- -RRB-)))))) (. .)))
acidophile- Organism that grows best under acid conditions (down to a pH of 1).
(ROOT (S (VP (VB Organisms) (SBAR (IN that) (S (NP (`` ``) (NN love) ('' '') (NNS acids)) (VP (VBP are) (VP (VBN known) (PP (IN as) (NP (NNS acidophiles))))))))))