Question: Which one is a canal that's connected by the city of Alexandria to Georgetown Alexandria Canal or Sturgeon Bay Ship Canal?

Context paragraphs:
Sturgeon Bay Ship Canal: The Sturgeon Bay Ship Canal is a shipping canal connecting Sturgeon Bay on Green Bay with Lake Michigan, across the Door Peninsula, at the city of Sturgeon Bay, Wisconsin, United States.

Aqueduct Bridge (Potomac River): The Aqueduct Bridge (also called the Alexandria Aqueduct) was a bridge between Georgetown, Washington, D.C., and Rosslyn, Virginia.  It was built to transport cargo-carrying boats on the Chesapeake and Ohio Canal in Georgetown across the Potomac River to the Alexandria Canal.  The same eight piers supported two different bridges: a wooden canal bridge (a wooden roadway bridge was added on top of the canal later) and an iron truss bridge carrying a roadway and an electric trolley line.  The bridge was closed in 1923 after the construction of the nearby Key Bridge.  The shuttered Aqueduct Bridge was demolished in 1933.

USCGC Sturgeon Bay (WTGB-109): USCGC "Sturgeon Bay" (WTGB 109) is the newest of the United States Coast Guard 140-foot "Bay"-class cutters.  Homeported in Bayonne, New Jersey, the primary missions of "Sturgeon Bay" and her crew are Domestic Icebreaking and Ports, Waters, & Coastal Security.  During the winter months, "Sturgeon Bay" is responsible for providing search and rescue capabilities to the ice-covered areas in New York City and the Hudson Valley, as well as throughout coastal New England.  The cutter also facilitates the safe navigation of commercial product, including gasoline and heating oil, through the ice-choked Hudson River from New York City to Albany.  All "Bay"-class cutters, including "Sturgeon Bay", use a low-pressure-air hull lubrication or bubbler system that forces air and water between the hull and ice.  This system improves icebreaking capabilities by reducing resistance against the hull, reducing horsepower requirements.

Bay Shipbuilding Company: Bay Shipbuilding Company (BSC) is a shipyard and dry dock company in Sturgeon Bay, Door County, Wisconsin.  As of 2015, Bay Ships was a subsidiary of Fincantieri Marine Group and produces articulated tug and barges, OPA-90 compliant double hull tank ships and offshore support vessels.  It also provides repair services to the lake freighter fleet.  In the past the shipyard located in Sturgeon Bay has operated under several different names and traces its history back to 1918.  The company also built 40,000 ton Lake freighters in the 1970s and 1980s.  While capable of producing large freighters, the yard has not built a freighter over 20,000 tons since 1987.  Former names of the shipyards at the 2015 location of Bay Shipbuilding are: Sturgeon Bay Shipbuilding, Leathem D. Smith Shipbuilding Company and Christy Corporation.

Sturgeon Bay, Wisconsin: Sturgeon Bay is a city in and the county seat of Door County, Wisconsin, United States.  The population was 9,144 at the 2010 census.  It is located at the natural end of Sturgeon Bay, although the Sturgeon Bay Ship Canal was built across the remainder of the Door Peninsula.

Sturgeon Bay: Sturgeon Bay is an arm of Green Bay extending southeastward approximately 10 miles into the Door Peninsula at the city of Sturgeon Bay, located approximately halfway up the Door Peninsula.  The bay is connected to Lake Michigan by the Sturgeon Bay Ship Canal.  Three bridges cross the bay, including the historic Sturgeon Bay Bridge, and the recently finished Oregon Street Bridge.

Door Peninsula: The Door Peninsula is a peninsula in eastern Wisconsin, separating the southern part of the Green Bay from Lake Michigan.  The peninsula begins in northern Brown and Kewaunee counties and proceeds northeast to include all of Door County.  It is the western portion of the Niagara Escarpment.  Well known for its cherry and apple orchards, the Door Peninsula is a popular tourism destination.  With the 1882 completion of the Sturgeon Bay Ship Canal, the northern half of the peninsula became an island.

Sturgeon Bay, Michigan: Sturgeon Bay was a small lumbering community the U.S. state of Michigan, located in Bliss Township on the southern border of what is now Wilderness State Park in the northwest part of Emmet County.  Almost nothing remains of Sturgeon Bay.  It was located on the south shore of Sturgeon Bay, an indentation of Lake Michigan, just west of where Sturgeon Bay Trail and M-119 intersect.  Intersection is Sturgeon Bay Trail and Lake Shore Drive.  M-119 terminates approximately four miles to the south of this intersection at Cross Village.  See Wikipedia entry for M-119 for correct information on the northern terminus of M-119.

Alexandria Canal (Virginia): The Alexandria Canal was a canal in the United States that connected the city of Alexandria to Georgetown in the District of Columbia.

Coast Guard Station Sturgeon Bay: Coast Guard Station Sturgeon Bay is a United States Coast Guard station located on Lake Michigan and the Sturgeon Bay Ship Canal in the Town of Sturgeon Bay in Door County, Wisconsin, just outside the city of Sturgeon Bay.  The Sturgeon Bay Canal Light is located within the limits of the station.  Duties of the station include Search and Rescue, Law Enforcement and Ice Rescue missions during the winter months.

Supporting paragraphs: Alexandria Canal (Virginia) Sturgeon Bay Ship Canal
Answer: Alexandria Canal