their parents would do well to cram earplugs in their ears and put pillowcases over their heads for 87 minutes . 
(ROOT (S (NP (PRP$ their) (NNS parents)) (VP (MD would) (VP (VB do) (ADVP (RB well)) (S (VP (TO to) (VP (VP (VB cram) (NP (NNS earplugs)) (PP (IN in) (NP (PRP$ their) (NNS ears)))) (CC and) (VP (VB put) (NP (NNS pillowcases)) (PP (IN over) (NP (PRP$ their) (NNS heads))) (PP (IN for) (NP (CD 87) (NNS minutes))))))))) (. .)))
(ROOT (S (NP (PRP$ ) (NNS )) (VP (MD ) (VP (VB ) (ADVP (RB )) (S (VP (TO ) (VP (VP (VB ) (NP (NNS )) (PP (IN ) (NP (PRP$ ) (NNS )))) (CC ) (VP (VB ) (NP (NNS )) (PP (IN ) (NP (PRP$ ) (NNS ))) (PP (IN ) (NP (CD ) (NNS ))))))))) (. )))