Question: Cape Elizabeth Light also known as Two Lights is a lighthouse in Cape Elizabeth, at the southwestern entrance to Casco Bay, s an inlet of the Gulf of Maine on the southern coast of Maine, New England, in which country?

Context paragraphs:
Casco Bay: Casco Bay is an inlet of the Gulf of Maine on the southern coast of Maine, New England, United States.  Its easternmost approach is Cape Small and its westernmost approach is Two Lights in Cape Elizabeth.  The city of Portland sits along its southern edge and the Port of Portland lies within.

Boon Island Light: Boon Island Light is located on the 300 x Boon Island off the southern coast of Maine, United States, near Cape Neddick.  Boon Island Light has the distinction of being the tallest lighthouse in both Maine and New England at 133 ft .  The lighthouse has a focal plane at 137 ft above mean high water.  The light's beacon flashes white every 5 seconds.

Cape Elizabeth Lights: Cape Elizabeth Light also known as Two Lights is a lighthouse in Cape Elizabeth, at the southwestern entrance to Casco Bay in Maine.

Halfway Rock Light: Halfway Rock Lighthouse is a lighthouse located on a barren ledge in Casco Bay, Maine.  The lighthouse tower, which has a height of 76 ft , and the attached ex-boathouse are all that remain, as the other buildings have been taken away in storms.  The name "Halfway Rock" comes from the position of the rock which is halfway between Cape Elizabeth and Cape Small, the southwest and northeast extremities of Casco Bay, which are about 18 nmi apart.

Tiparra Reef: Tiparra Reef (also spell as Tipara) is a reef located in Spencer Gulf in South Australia about 14 km west of the town of Port Hughes.  The reef is described as being "a bank of sand, 2.5 nmi in extent, with depths of less than 5 m , that lies in the middle of Tiparra Bay" with a"limestone ledge, 0.1 nmi long in a N(orth) S(outh) direction and about 20 m wide, that just dries, lies on the S(outh) W(est) end of the reef 5 nmi N(orth) W(est) of Cape Elizabeth" (which is the southern headland of Tiparra Bay).  The limestone ledge was the site of an operational lighthouse from August 1877 until 1995 when its service was largely replaced by a light tower located on Warburto Point about 14 km to the north-east.  Much of the lighthouse structure remains in place along with a minor navigation aid consisting of a flashing light.

Hog Island Light: The Hog Island Light was a lighthouse roughly marking its eponymous island, and thus the north side of the Great Machipongo Inlet on the Virginia coast.  Originally, no light existed between Cape Henlopen, Delaware and Cape Charles, Virginia.  In 1830 the United States Congress appropriated money for a coastal beacon in the general vicinity of Chincoteague Island.  The following year, the Collector of Customs in Norfolk selected Assateague Island.  In 1853 another lighthouse was erected twenty miles north of Cape Charles at Hog Island to light the remaining dark section of coastline between the Assateague Light and the entrance to the Chesapeake Bay.

Two Bush Island Light: Two Bush Island Light is a lighthouse on Two Bush Island, on the channel of the same name, the southwestern entrance to Penobscot Bay, Maine.  The two bushes for which the island was named have long since vanished.  The lighthouse was established in 1897.  The keepers were removed when the light was automated in 1964.  Afterward, the Two Bush Island fog signal was operated by the keepers at nearby Whitehead Light Station, who also monitored the light.  The keeper's house was destroyed in 1970 as a Green Beret demolition exercise.  In the summer of 2000, the light was converted to solar power.  The lighthouse itself continues to be a navigation aid, but is only visible by boat or from the air.  In 1998, the lighthouse became the property of the U.S. Fish and Wildlife Service.

Whitehead Light: Whitehead Light is a lighthouse on Whitehead Island, on Muscle Ridge Channel, in the southwestern entrance to Penobscot Bay, Maine.  It is in the town of St.George.  Established in 1807, it is one of Maine's oldest light stations, with its present tower built in 1852 to a design attributed to Alexander Parris.  It was listed on the National Register of Historic Places as Whitehead Light Station on March 14, 1988.  The property is now privately owned by Pine Island Camp, which conducts outings to the facility.  The light itself remains an active aid to navigation, maintained by the United States Coast Guard.

Two Lights State Park: Two Lights State Park is a public recreation area occupying 41 acre of headland on Cape Elizabeth, Maine, that offers views of Casco Bay and the Atlantic Ocean.  The state park, which opened in 1961, is named after the twin Cape Elizabeth Lights, although there are no lighthouses in the park itself.  In addition to rocky headlands, the park includes the remains of a World War II–era seacoast battery bunker and a fire control tower.  It is managed by the Maine Department of Agriculture, Conservation and Forestry.

Portland Head Light: Portland Head Light is a historic lighthouse in Cape Elizabeth, Maine.  The light station sits on a head of land at the entrance of the primary shipping channel into Portland Harbor, which is within Casco Bay in the Gulf of Maine.  Completed in 1791, it is the oldest lighthouse in the state of Maine.  The light station is automated, and the tower, beacon, and foghorn are maintained by the United States Coast Guard, while the former lighthouse keepers' house is a maritime museum within Fort Williams Park.

Supporting paragraphs: Cape Elizabeth Lights Casco Bay
Answer: United States