( ( ( ( Biology 's ) domain ) ( of knowing ) ) ( ( is ( living things ) ) . ) )
(ROOT (S (NP (NP (NP (NNP Biology) (POS 's)) (NN domain)) (PP (IN of) (S (VP (VBG knowing))))) (VP (VBZ is) (VP (VBG living) (NP (NNS things)))) (. .)))
Biology's domain of knowing is living things.
(ROOT (S (NP (DT A) (NN domain)) (VP (VBZ is) (NP (NP (DT the) (JJS highest) (NN taxon)) (PP (IN in) (NP (NP (DT the) (NN classification)) (PP (IN of) (NP (VBG living) (NNS things))))))) (. .)))