The second building in the complex was originally known as the `` Central Annex `` and became known as `` Castle Green , '' while the third building is known as the `` North Annex . ''
DET ADJ NOUN ADP DET NOUN AUX ADV VERB ADP DET `` PROPN PROPN `` CCONJ AUX VERB ADP `` PROPN PROPN , '' SCONJ DET ADJ NOUN AUX VERB ADP DET `` PROPN PROPN . ''