Question: Birch Point is a peninsula that is located in what county of Maine?

Context paragraphs:
Sullivan, Maine: Sullivan is a town in Hancock County, Maine, United States.  The population was 1,236 at the 2010 census.  The town was named for Daniel Sullivan, an early settler.  Colloquially referred to as "Sully" or "the Sullivans" – like many Maine municipalities composed of villages with geographic designations of the town proper – the municipality was incorporated in 1789.  Located in the Upper Schoodic Peninsula sub-region of Maine's Downeast Acadia region, the Municipality has had several incarnations as Waukeag, New Bristol, and later Sullivan; and once included nearby communities of Hancock, Sorrento, and what would later be (parts of Gouldsboro Point TWP, Tunk Lake TWP, the Schoodic Foothills, Hog Bay, and various other districts over time divided off) Township 7, South & Middle Districts.  Once home to abundant granite quarries, the Town of Sullivan is now regarded as a residential community for nearby Ellsworth and Mount Desert Island, Maine.  Located along US Rte 1, Taunton River, and Hog Bay, Sullivan is home to a slough of reversing tidal falls and many scenic turnouts that dot the Schoodic National Scenic Byway along the Upper Schoodic Peninsula.

North Branch Birch River: The North Branch Birch River is a 9.6 mi river in Aroostook County, Maine, in the United States.  From the outlet of a small pond ( ) in Maine Township 16, Range 8, WELS, it runs about 6 mi east and about 3 mi south to its confluence with the South Branch in the town of Eagle Lake to form the Birch River.  It is part of the Fish River watershed, draining north to the Saint John River and ultimately southeast to the Bay of Fundy in New Brunswick, Canada.

Birch Harbor, Maine: Birch Harbor is an unincorporated village in the town of Gouldsboro, Hancock County, Maine, United States.  The community is located along Maine State Route 186 22 mi east-southeast of Ellsworth.  Birch Harbor has a post office with ZIP code 04613, which opened on March 26, 1880.

Birch Point State Park: Birch Point State Park is a public recreation area occupying 62 acre on Penobscot Bay in the town of Owls Head, Knox County, Maine.  The state park features a sandy, crescent-shaped "pocket beach" with scenic views of the Muscle Ridge Islands dotting Muscle Ridge Channel.  The park is managed by the Maine Department of Agriculture, Conservation and Forestry.

South Branch Birch River: The South Branch Birch River is a 9.4 mi river in Aroostook County, Maine, in the United States.  From the outlet of a small pond ( ) in Maine Township 16, Range 9, WELS, it runs southeast and east to its confluence with the North Branch in the town of Eagle Lake to form the Birch River.  It is part of the Fish River watershed, draining north to the Saint John River, which flows southeast to the Bay of Fundy in New Brunswick, Canada.

Machiasport, Maine: Machiasport is a town in Washington County, Maine, United States.  The population was 1,119 at the 2010 census.  Machiasport is a historic seaport and tourist destination.

Point Peninsula Complex: The Point Peninsula Complex was an indigenous culture located in Ontario and New York from 600 BCE to 700 CE (during the Middle Woodland period).  Point Peninsula ceramics were first introduced into Canada around 600 BCE then spread south into parts of New England around 200 BCE.  Some time between 300 BCE and 1 CE, Point Peninsula pottery first appeared in Maine, and "over the entire Maritime Peninsula."  Little evidence exists to show that it was derived from the earlier, thicker pottery, known as Vinette I, Adena Thick, etc.. .  Point Peninsula pottery represented a new kind of technology in North America and has also been called Vinette II.  Compared to existing ceramics that were thicker and less decorated, this new pottery has been characterized by "superior modeling of the clay with vessels being thinner, better fired and containing finer grit temper."  Where this new pottery technology originated is not known for sure.  The origin of this pottery is "somewhat of a problem."  The people are thought to have been influenced by the Hopewell traditions of the Ohio River valley.  This influence seems to have ended about 250 CE, after which they no longer practiced burial ceremonialism.

The Chops: The Chops Passage is a channel in Sagadahoc County, Maine and is nearby to Chops Point, West Chops Point and Sturgeon Island.  Merrymeeting Bay empties into the Kennebec River here before it heads to the Atlantic Ocean.  Chop Point School and Chop Point Camp are also located on west Chops Point a Peninsula located at one side of The Chops.The Chops Passage is also close to Goose Cove and Butler Cove.  The Chops also mark the border between Bath, Maine, and Woolwich, Maine.

Birch Point: Birch Point, also known as Clark's Point, is a peninsula in Machiasport, Maine.  It separates Sanborn Cove to the north from Larrabee Cove to the south on the west side of Machias Bay, a short way south of the mouth of the Machias River.  The point is of prehistoric and historic importance to the local Passamaquoddy people, as it is the site of large panels of rock art which have been listed on the National Register of Historic Places.

New Brunswick Route 113: Route 113 is a highway in the Canadian province of New Brunswick; which serves as the only highway link from the town of Shippagan and the islands off the northeast coast of the Acadian Peninsula to the mainland.  The route begins at Route 11 exit 217 in Pokemouche, and ends at Birch Point at the northern tip of Miscou Island, a distance of 57.9 kilometres.  Communities along the route include Inkerman, Shippagan and Lamèque.

Supporting paragraphs: Birch Point Machiasport, Maine
Answer: Washington County