The four Javis children? asked Severn.
( ( ( ( The ( four ( Javis children ) ) ) ? ) asked ) ( Severn . ) )
(ROOT (S (NP (NP (DT The) (CD four) (NNP Javis) (NNS children)) (. ?) (S (VP (VBN asked)))) (VP (VBN Severn)) (. .)))
Severn knows nothing about the Jarvis', who have two children.
( Severn ( ( ( knows nothing ) ( about ( ( ( the ( Jarvis ' ) ) , ) ( who ( have ( two children ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Severn)) (VP (VBZ knows) (NP (NN nothing)) (PP (IN about) (NP (NP (DT the) (NNP Jarvis) (POS ')) (, ,) (SBAR (WHNP (WP who)) (S (VP (VBP have) (NP (CD two) (NNS children)))))))) (. .)))