Question: Which building contains more square feet, 50 Hudson Yards or 15 Penn Plaza?
Context: 15 Hudson Yards is a residential building currently under construction on Manhattan's West Side.  Located in Chelsea near Hell's Kitchen Penn Station area, the building is a part of the Hudson Yards project, a plan to redevelop the Metropolitan Transportation Authority's West Side Yards.  The tower started construction on December 4, 2014. 15 Penn Plaza, also known as the Vornado Tower, is a proposed 68-story tower in the Midtown Manhattan section of New York City planned by Vornado Realty Trust.  It would have 430 units and 2,050,000 square feet (190,451 m²) of floor space.  The Hiller Group is the designer.  Despite only having 68 floors, it would be just 10 m shorter than the Empire State Building, which has 102 floors. 35 Hudson Yards (also Tower E or Equinox Tower) is a mixed-use building currently under construction in Manhattan's West Side and is slated to be composed of apartment units and a hotel.  Located near Hell's Kitchen, Chelsea, and the Penn Station area, the building is a part of the Hudson Yards project, a plan to redevelop the Metropolitan Transportation Authority's West Side Yards. One Penn Plaza (1 Penn Plaza) is a skyscraper in New York City, located between 33rd Street and 34th Street, west of Seventh Avenue, and adjacent to Pennsylvania Station and Madison Square Garden.  It is the tallest building in the Pennsylvania Plaza complex of office buildings, hotels, and entertainment facilities. The hill rises about 250 feet above the level of the plateau, which itself constitutes the summit of the Mahadev range at this point.  The cone with the walls on it is seen from a great distance and appears very small indeed.  But on near approach it is seen to be but the inner citadel of a place of considerable size and strength for the times in which it was built.  On the south-west the outer wall or enceinte is entered by a rude gateway of a single pointed arch about eight feet high and five feet broad.  As usual there is a curtain of solid masonry inside.  The gate lies about 150 yards east of the edge of the plateau, which there terminates in an almost unbroken vertical precipice of several hundred feet in height and receding in a north-easterly direction.  No wall was built along about three hundred yards of this part which is absolutely unscalable, but for the rest of the way the walling is continued along the edge of the cliff in a north-east direction for about another three hundred yards.  Here it turns still following the cliff to the south-east for another seven hundred yards, and then gradually rounds to the westward covering four hundred and fifty yards more till it meets the gateway.  But for the break of the inaccessible precipice this outer wall would form a nearly equilateral triangle with the corners rounded off, the side being of some six hundred and fifty yards.  Facing nearly north, about fifty yards from the north-east angle, is a gateway with a couple of curtains in solid masonry.  This entrance is cut in the sides of the cliff about twenty feet below the top which is reached by some dozen steps.  It consisted as usual of a pointed arch, the top fallen in, about ten feet high by five broad.  It leads out to the path down to Girvi, a village in the plains below and it probably formed the communication with Phaltan.  This road winds down the face of the range for some five hundred feet till it hits the shoulder of a spur which it then follows to the base.  The walling on the south side, from the edge of the cliff to some hundred yards east of the southern gate, is not more than a couple of feet in thickness and consists of all-fitting stones unmortared.  The rest is massive and well mortared and still fairly preserved.  The average height is from seven to ten feet.  In the south-east angle is a rude temple of Bhairavnath and a few houses with the remains of Man y more.  On the right side of the southern gate is a well preserved stone pond about thirty yards square with steps leading down to it.  Next to and on the north of Bhairavnath's temple is another pond.  The way up to the fort proper or upper and lower citadels is from the north side.  The path up the hill side, which is steep but with grass and soil left in Man y places, is almost destroyed.  About 150 feet up is the outer citadel built on a sort of shoulder of the hill and facing almost due west.  It contains two massive bastions of excellent masonry looking north-west and south-west so that guns planted on them could comMan d respectively the north and south gateways.  This citadel was connected with the main wall by a cross wall running across the whole breadth of the fort from east to west.  Its entrance lies close below that to the upper citadel.  A masonry curtain projects so as to hide the arch itself, which is not more than seven feet high by three broad, and has to be entered from due east.  On the south side the walls are carried right up to the scarp of the upper citadel and are some ten feet high, so that to take the lower citadel in rear or flank must have been difficult.  The upper citadel is above a vertical scarp some thirty feet high.  The entrance to it lies some thirty feet above that to the lower citadel, and is cut in the rock about eight feet wide.  There is a gateway of a pointed arch with the top fallen in and twenty odd steps leading up to it and ten more cut out of the rock, and winding up past the inside curtain on to the top.  The walls of this upper citadel are still in tolerable preservation.  They were originally about ten feet high and built of fair masonry.  There is a large turret on the south-west corner, evidently meant to comMan d the southern gate.  About ten yards to the east of this turret is a new looking building which was the headquarters or sadar.  Immediately east of this and below it is a great pit about thirty feet square and equally deep roughly cut in the rock and said by the people to be a dungeon.  Next to it on the south is a small pond evenly cut and lined with mortar used for storing water.  There are some remains of sepoys' houses, and, near the turret, a small stone wheel said to belong to a gun.  The outer walls east of the gates have bastions at every turn of the cliffs, and the masonry here is particularly strong and well preserved.  It would appear that attacks were dreaded chiefly from the plain below.  The assailants could either come up the spur towards the north entrance or they might attempt the spurs on the other side of the eastern ravine and attack the southern gateway.  Hence apparently the reason for strengthening the walls of the enceinte on this side.  After passing the southern gateway the assailants would be commanded Maan, Maharashtra from the lower citadel.  They Would then be encountered by the cross wall.  If that obstacle was overcome the besieged would run round the east side and into the two citadels.  The appearance from the fort of the plain in the north is most formidable.  The Panvan plateau completely commands Maan, Maharashtra and almost overhangs it.  The fort is believed to have been built by Shivaji to resist the Moghals whose attacks he must have dreaded from the plain below.  The Karkhanis or Superintendent of the fort was a Prabhu.  The fort garrison consisted of 200 Ramoshis, Mahars, and other hereditary Gadkaris besides sepoys.  It was surrendered in 1818 to Vitthal Pant Phadnis of the Raja of Satara left in charge of the town.  He detached 200 men to take possession, being part of a force then raised to protect the town from the enterprizes of Bajirav's garrisons then in the neighbourhood.  [Elphinstone in Pendhari and Maratha War Papers, 245.] 55 Hudson Yards (also known as One Hudson Yards or One Hudson Boulevard) is a future tower just outside the Hudson Yards Redevelopment Project.  Located in Chelsea, Manhattan, it will add a combined 4000000 sqft of space to the Hudson Yards project, along with 50 Hudson Yards, even though the two buildings will be located outside of the redevelopment site itself. 50 Hudson Yards is a building being planned as part of the Hudson Yards Redevelopment Project in Hell's Kitchen, Manhattan.  The planned building is to be located to the north of 30 Hudson Yards, and on the east side of the Hudson Park and Boulevard, adjacent to 55 Hudson Yards.  It will total 2.9 million square feet of commercial space.  At the SW corner of 34th Street and 10th Avenue, it will replace the drive-thru McDonald's that had long-occupied the space. 30 Hudson Yards (also the North Tower) is a super tall office building currently under construction in the West Side area of Manhattan.  Located near Hell's Kitchen, Chelsea and the Penn Station area, the building is a part of the Hudson Yards Redevelopment Project, a plan to redevelop the Metropolitan Transportation Authority's West Side Yards. The Hotel Pennsylvania is a hotel located at 401 Seventh Avenue (15 Penn Plaza) in Manhattan, across the street from Pennsylvania Station and Madison Square Garden in New York City. Hershey Community Center Building is a historic building located at Hershey, Dauphin County, Pennsylvania.  It was designed by noted architect Paul Philippe Cret (1876-1945), under a general plan by Milton S. Hershey (1857-1945), and built in 1932-1933.  Plans for a community theater and center were originally drawn-up by C. Emlen Urban in 1915.  It is a five story building, encompassing 190,699 square feet.  It is shaped like a distended "E," with an open court in the front center and sun porches on three sides.  The building is faced in Indiana limestone.  The building houses a large theater, the Hershey Theatre (51,525 square feet) and small theater (5,535 square feet), along with a variety of recreational facilities including a gymnasium, swimming pool, game rooms, locker rooms, and showers.  The building also houses a library (6,640 square feet) and dormitories (15,970 square feet).
Answer: 50 Hudson Yards