i spent a number of years in the service as an intelligence analyst
( i ( ( spent ( ( a number ) ( of ( years ( in ( the service ) ) ) ) ) ) ( as ( an ( intelligence analyst ) ) ) ) )
(ROOT (S (NP (FW i)) (VP (VBD spent) (NP (NP (DT a) (NN number)) (PP (IN of) (NP (NP (NNS years)) (PP (IN in) (NP (DT the) (NN service)))))) (PP (IN as) (NP (DT an) (NN intelligence) (NN analyst))))))
I was only briefly in the service as a driver.
( I ( ( ( was ( only briefly ) ) ( in ( ( the service ) ( as ( a driver ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBD was) (ADVP (JJ only) (NN briefly)) (PP (IN in) (NP (NP (DT the) (NN service)) (PP (IN as) (NP (DT a) (NN driver)))))) (. .)))