( ( Since ( hemoglobin ( is ( ( ( ( the ( main component ) ) ( of ( red ( blood cells ) ) ) ) and ) ( ( the carrier ) ( for ( oxygen molecules ) ) ) ) ) ) ) ( , ( anemia ( ( occurs ( ( ( when ( ( the ( hemoglobin supply ) ) ( is inadequate ) ) ) or ) ( if ( ( the hemoglobin ) ( is dysfunctional ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN Since) (S (NP (NN hemoglobin)) (VP (VBZ is) (NP (NP (NP (DT the) (JJ main) (NN component)) (PP (IN of) (NP (JJ red) (NN blood) (NNS cells)))) (CC and) (NP (NP (DT the) (NN carrier)) (PP (IN for) (NP (NN oxygen) (NNS molecules)))))))) (, ,) (NP (NN anemia)) (VP (VBZ occurs) (SBAR (SBAR (WHADVP (WRB when)) (S (NP (DT the) (NN hemoglobin) (NN supply)) (VP (VBZ is) (ADJP (JJ inadequate))))) (CC or) (SBAR (IN if) (S (NP (DT the) (NN hemoglobin)) (VP (VBZ is) (ADJP (JJ dysfunctional))))))) (. .)))
Since hemoglobin is the main component of red blood cells and the carrier for oxygen molecules, anemia occurs when the hemoglobin supply is inadequate or if the hemoglobin is dysfunctional.
(ROOT (S (NP (NNP Hemoglobin)) (VP (VBZ is) (NP (NP (DT a) (NN carrier) (NN molecule)) (SBAR (WHNP (WDT that)) (S (VP (VBZ becomes) (ADJP (RBR less) (JJ effective) (PP (IN at) (NP (NP (VBG binding) (NN oxygen)) (PP (IN as) (NP (NN temperature) (NNS increases))))))))))) (. .)))