( Usually ( ( the vaccine ) ( ( is ( administered ( as ( ( an injection ) ( in ( the arm ) ) ) ) ) ) . ) ) )
(ROOT (S (ADVP (RB Usually)) (NP (DT the) (NN vaccine)) (VP (VBZ is) (VP (VBN administered) (PP (IN as) (NP (NP (DT an) (NN injection)) (PP (IN in) (NP (DT the) (NN arm))))))) (. .)))
Usually the vaccine is administered as an injection in the arm.
(ROOT (S (NP (NNP Vaccine)) (VP (VBZ is) (NP (NP (DT a) (JJ preventative) (NN measure)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (ADVP (RB often)) (VP (VBN delivered) (PP (IN by) (NP (NN injection))) (PP (IN into) (NP (DT the) (NN arm))))))))) (. .)))