(S (S (S (BASENP (DT The) (NNS commandos)) (VP (VBD were) (VP (VBN hampered)))) (SBAR (IN because) (S (BASENP (PRP they)) (VP (VBD feared) (S (S (VP (VBG injuring) (BASENP (NN hotel) (NNS guests)))) (SBAR (IN if) (S (BASENP (PRP they)) (VP (VBD used) (BASENP (JJ overwhelming) (NN force)))))))))) (PERIOD .))