Create a set of triples that describes the content in the following sentence.

250 Delaware Avenue, United States, has 12 floors covering an area of 30843.8 square metres, and had a building start date of January 2014.
250 Delaware Avenue LOCATION United States
250 Delaware Avenue BUILDING_START_DATE "January, 2014"
250 Delaware Avenue FLOOR_AREA 30843.8 (square metres)
250 Delaware Avenue FLOOR_COUNT 12