(S (S (BASENP (DT The) (NN vaccine)) (VP (VBZ has) (VP (VBN been) (VP (VBN developed) (PP (IN from) (NP (BASENP (DT an) (NN adenovirus)) (COMMA ,) (NP (BASENP (DT a) (NN type)) (PP (IN of) (NP (BASENP (NN virus)) (SBAR (WHNP (WDT that)) (S (VP (VBZ causes) (BASENP (DT the) (JJ common) (NN cold)))))))))))))) (PERIOD .))