( ( Iron peas ) ( ( ( grow well ) ( on ( red soils ) ) ) . ) )
(ROOT (S (NP (NNP Iron) (NNS peas)) (VP (VBP grow) (ADVP (RB well)) (PP (IN on) (NP (JJ red) (NNS soils)))) (. .)))
Iron peas grow well on red soils.
(ROOT (S (NP (NP (NNP Iron)) (PP (IN in) (NP (DT the) (NN soil)))) (VP (VBZ causes) (S (NP (NNS mars)) (VP (TO to) (VP (VB look) (ADJP (JJ red)))))) (. .)))