( Leukemia ( , ( and ( ( ( most ( brain cancers ) ) ( are ( of ( these types ) ) ) ) . ) ) ) )
(ROOT (FRAG (NP (NNP Leukemia)) (, ,) (CC and) (S (NP (JJS most) (NN brain) (NNS cancers)) (VP (VBP are) (PP (IN of) (NP (DT these) (NNS types))))) (. .)))
Leukemia, and most brain cancers are of these types.
(ROOT (S (NP (NNP Leukemia)) (VP (VBZ is) (NP (NP (DT the) (ADJP (RBS most) (JJ common)) (NN type)) (PP (IN of) (NP (NP (NN cancer)) (VP (VBN developed) (PP (IN in) (NP (NNS children)))))))) (. .)))