( ( Haplogroup R1a ) ( ( is ( ( ( one ( of ( the ( major classifications ) ) ) ) ( -LRB- ( ( called clades ) -RRB- ) ) ) ( of ( ( Y-chromosome types ) ( found ( in ( human ( male lines ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Haplogroup) (NNS R1a)) (VP (VBZ is) (NP (NP (NP (NP (CD one)) (PP (IN of) (NP (DT the) (JJ major) (NNS classifications)))) (PRN (-LRB- -LRB-) (VP (VBN called) (NP (NNS clades))) (-RRB- -RRB-))) (PP (IN of) (NP (NP (JJ Y-chromosome) (NNS types)) (VP (VBN found) (PP (IN in) (NP (JJ human) (JJ male) (NNS lines)))))))) (. .)))
Haplogroup R1a is one of the major classifications (called clades) of Y-chromosome types found in human male lines.
(ROOT (S (NP (DT A) (NN clade)) (VP (VBZ is) (NP (NP (CD one) (NN way)) (PP (IN of) (NP (VBG classifying) (NNS organisms))))) (. .)))