Question: The Southside Connector would connect the Bourne Bridge to the Mid-Cape Highway on a geographic cape that extends into what ocean?

Context paragraphs:
SPIN (cable system): SPIN (or South Pacific Island Network) was a submarine communications cable system that would connect the New Zealand to Tahiti and would connect several South Pacific islands along the way.  The SPIN cable would be 6500 km long and will have a 64x10 Gbit/s capacity.  It was planned to be in service late 2010.  It would have cable landing points at:

Massachusetts Route 149: Route 149 is a 4.83 mi long north–south highway on Cape Cod in southeastern Massachusetts.  The route, located in Barnstable County, begins at an intersection with Route 28 in Marstons Mills, serving as the main road through the small community.  The route crosses US 6 (the Mid-Cape Highway) before reaching a junction with Route 6A in West Barnstable.  The route was a former designation of Route 49.

Parama Island Flyover: Ma Flyover (officially Parama Island Flyover) It is 4.5-kilometre-long flyover in Kolkata.  It is built along Park Circus Connector and would connect E.M. Bypass with Park Circus 7-point crossing then to Vidyasagar setu to howrah .  A ramp of the flyover is slated to connect with the existing AJC Bose Road Flyover, which will virtually help in making a seamless, no-signal traffic corridor from EM Bypass to Alipore.  The total length of the flyover, including the ramps, is 9.2 km.  The flyover started its construction in February 2010.  The project had an original deadline of August 2012, and the deadline was extended multiple time.  After a huge cost-overrun and delays, the major flank was opened on 9 October 2015 at a cost of 460-crores.  A 450-meter flank of the flyover, which would directly connect the flyover with AJC Bose Road Flyover is expected to open in July 2016.  Barring a stretch of 684.31-meters constructed by Larsen & Tubro, the flyover was constructed by Hindustan Construction Company.

Sandwich Road: Sandwich Road is a two-lane state highway in Bourne, Massachusetts, United States, traveling from Bourne center east to Sandwich.  It begins at a four-way intersection with Shore Road, County Road, and Trowbridge Road in Bourne center; Waterhouse Road and Perry Avenue (the latter the former approach to the old Bourne Bridge) also once ended there.  It heads east along the south side of the Cape Cod Canal, traveling under both the Bourne Bridge and the Sagamore Bridge.  A short connection, also called Sandwich Road, connects the Bourne Rotary – the south end of the Bourne Bridge – with the main road.  From the area of the Sagamore Bridge, at Sagamore, east to the Sandwich town line, Sandwich Road carries Route 6A.

Bourne Bridge: The Bourne Bridge in Bourne, Massachusetts, carries Route 28 across the Cape Cod Canal, connecting Cape Cod with the rest of Massachusetts.  It won the American Institute of Steel Construction's Class "A" Award of Merit as the "Most Beautiful Steel Bridge" in 1934.

U.S. Route 6 in Massachusetts: U.S. Route 6 in Massachusetts (US 6) is a 117.952 mi long portion of the cross-country U.S. Route 6 highway connecting Providence, Rhode Island to Fall River, New Bedford, and Cape Cod.  In the Fall River and New Bedford areas, US 6 is a secondary highway paralleling Interstate 195.  On Cape Cod, US 6 is the primary highway interconnecting the towns of the area.  The expressway section in this area is also known as the Mid-Cape Highway.  The route is also alternatively signed as the "Grand Army of the Republic Highway."

Gravina Island Highway: The Gravina Island Highway is a 3.2 mi gravel highway located on Gravina Island, in the Ketchikan Gateway Borough of the U.S. state of Alaska.  The highway was part of a project that would connect Gravina Island, specifically, the Ketchikan International Airport, to the city of Ketchikan.  The Gravina Island Bridge, which would have connected the highway to Ketchikan was cancelled, but the highway was built.  Because the highway does not pass by or connect to any village or other place of importance, it has been nicknamed the "Highway to Nowhere".

Southside Connector: The Southside Connector was a proposed expressway that would connect the Bourne Bridge to the Mid-Cape Highway near exit 2 on Cape Cod.  Currently, a similar route is served by two two-lane highways, Sandwich Road and a stretch of US 6, on opposite sides of the Cape Cod Canal.  Originally, the expressway was planned to be routed north of the canal.  Plans were changed when it was discovered that the Sagamore Bridge was overcrowded and the nearby Bourne Bridge was under capacity.  The route was shifted in the 1970s and the current plans of the route would go through the northern half of the Massachusetts Military Reservation.

Massachusetts Route 25: Route 25 is a numbered state highway located in Plymouth County and Barnstable County, Massachusetts, United States.  The route is a nominally east–west freeway for its entire length, and less commonly known as the Blue Star Memorial Highway.  An eastward continuation of Interstate 495, Route 25 provides freeway access to Cape Cod.  The route's western terminus is at a trumpet interchange with I-495 and I-195 in Wareham.  The route has three numbered interchanges along its 10.006 mi length before terminating at the northern end of the Bourne Bridge in Bourne; the mainline of Route 25 continues across the bridge and over the Cape Cod Canal as Massachusetts Route 28 south.

Cape Cod: Cape Cod is a geographic cape extending into the Atlantic Ocean from the southeastern corner of mainland Massachusetts, in the northeastern United States.  Its historic, maritime character and ample beaches attract heavy tourism during the summer months.

Supporting paragraphs: Southside Connector Cape Cod
Answer: Atlantic Ocean