By now, you should have received registration materials for the Fall Alumni Dental Conference.
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The registration materials for the Fall Alumni Dental Conference were sent out last month.
( ( ( The ( registration materials ) ) ( for ( the ( Fall ( Alumni ( Dental Conference ) ) ) ) ) ) ( ( were ( ( sent out ) ( last month ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN registration) (NNS materials)) (PP (IN for) (NP (DT the) (NNP Fall) (NNP Alumni) (NNP Dental) (NNP Conference)))) (VP (VBD were) (VP (VBN sent) (PRT (RP out)) (NP (JJ last) (NN month)))) (. .)))