i felt trapped and with no obvious escape for the entire 100 minutes . 
(ROOT (S (NP (PRP i)) (VP (VBD felt) (UCP (ADJP (VBN trapped)) (CC and) (PP (IN with) (NP (DT no) (JJ obvious) (NN escape)))) (PP (IN for) (NP (DT the) (JJ entire) (CD 100) (NNS minutes)))) (. .)))
(ROOT (S (NP (PRP )) (VP (VBD ) (UCP (ADJP (VBN )) (CC ) (PP (IN ) (NP (DT ) (JJ ) (NN )))) (PP (IN ) (NP (DT ) (JJ ) (CD ) (NNS )))) (. )))