( ( If ( fitness ( is ( the ( ability ( to ( produce offspring ) ) ) ) ) ) ) ( , ( ( then ( the ( long-lived cow ) ) ) ( ( is ( ( much ( more fit ) ) ( than ( ( the kicker ) ( that ( is ( slaughterd early ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (NN fitness)) (VP (VBZ is) (NP (DT the) (NN ability) (S (VP (TO to) (VP (VB produce) (NP (NN offspring))))))))) (, ,) (NP (RB then) (DT the) (JJ long-lived) (NN cow)) (VP (VBZ is) (ADJP (ADJP (RB much) (RBR more) (JJ fit)) (PP (IN than) (NP (NP (DT the) (NN kicker)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (VP (VBN slaughterd) (ADVP (RB early)))))))))) (. .)))
If fitness is the ability to produce offspring, then the long-lived cow is much more fit than the kicker that is slaughterd early.
(ROOT (S (NP (DT The) (NN term) (NN fitness)) (VP (VBZ describes) (NP (NP (DT the) (JJ overall) (NN ability)) (PP (IN of) (NP (DT an) (NN animal) (S (VP (TO to) (VP (VB survive) (CC and) (VB produce) (NP (NN offspring))))))))) (. .)))