( ( Explains ( how ( parents ( can ( determine ( if ( ( their child ) ( shows ( signs ( of ( having ADD ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VBZ Explains) (SBAR (WHADVP (WRB how)) (S (NP (NNS parents)) (VP (MD can) (VP (VB determine) (SBAR (IN if) (S (NP (PRP$ their) (NN child)) (VP (VBZ shows) (NP (NP (NNS signs)) (PP (IN of) (S (VP (VBG having) (NP (NNP ADD)))))))))))))) (. .)))
Explains how parents can determine if their child shows signs of having ADD.
(ROOT (S (NP (NNP Children)) (VP (VBP resemble) (NP (PRP$ their) (NNS parents)) (SBAR (IN because) (S (NP (PRP they)) (VP (VBP have) (NP (JJ similar) (NN dna)))))) (. .)))