The National Football League semifinals are set.
( ( The ( National ( Football ( League semifinals ) ) ) ) ( ( are set ) . ) )
(ROOT (S (NP (DT The) (NNP National) (NNP Football) (NNP League) (NN semifinals)) (VP (VBP are) (VP (VBN set))) (. .)))
They were unable to disclose when the dates would be set.
( They ( ( were ( unable ( to ( disclose ( when ( ( the dates ) ( would ( be set ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBD were) (ADJP (JJ unable) (S (VP (TO to) (VP (VB disclose) (SBAR (WHADVP (WRB when)) (S (NP (DT the) (NNS dates)) (VP (MD would) (VP (VB be) (VP (VBN set))))))))))) (. .)))