( ( ( Acute ( lymphoblastic leukemia ) ) ( -LRB- ( ALL -RRB- ) ) ) ( ( is ( ( the ( ( most common ) form ) ) ( of ( cancer ( in children ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Acute) (JJ lymphoblastic) (NN leukemia)) (PRN (-LRB- -LRB-) (NP (NNP ALL)) (-RRB- -RRB-))) (VP (VBZ is) (NP (NP (DT the) (ADJP (RBS most) (JJ common)) (NN form)) (PP (IN of) (NP (NP (NN cancer)) (PP (IN in) (NP (NNS children))))))) (. .)))
Acute lymphoblastic leukemia (ALL) is the most common form of cancer in children.
(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)))))))) (. .)))