( ( ( The ( two ( biggest ( management factors ) ) ) ) ( affecting this ) ) ( ( are ( stocking ( ( ( density and ) season ) ( of lambing ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (CD two) (JJS biggest) (NN management) (NNS factors)) (VP (VBG affecting) (NP (DT this)))) (VP (VBP are) (VP (VBG stocking) (NP (NP (NN density) (CC and) (NN season)) (PP (IN of) (NP (NN lambing)))))) (. .)))
The two biggest management factors affecting this are stocking density and season of lambing.
(ROOT (S (NP (NNP Depth) (CC and) (NNP density)) (VP (VBP are) (NP (NP (DT the) (CD two) (NNS factors)) (SBAR (WHNP (WDT that)) (S (VP (VBP affect) (NP (NP (DT the) (NN pressure)) (PP (IN of) (NP (NNS fluids))))))))) (. .)))