Question: what is the deepest part of the ocean off the east coast of the united states?

Knowledge 1: East Coast of the United States
The East Coast of the United States is the coastline along which the Eastern United States meets the North Atlantic Ocean. This area is also known as the Eastern Seaboard, the Atlantic Coast and the Atlantic Seaboard. The coastal states that have shoreline on the Atlantic Ocean are, from north to south, Maine, New Hampshire, Massachusetts, Rhode Island, Connecticut, New York, New Jersey, Delaware, Maryland, Virginia, North Carolina, South Carolina, Georgia, and Florida. [SEP] Knowledge 2: Puerto Rico Trench
The Puerto Rico Trench is located on the boundary between the Caribbean Sea and the Atlantic Ocean. The oceanic trench is associated with a complex transition between the Lesser Antilles subduction zone to the south and the major transform fault zone or plate boundary, which extends west between Cuba and Hispaniola through the Cayman Trench to the coast of Central America. The trench is 800 kilometres (497 mi) long and has a maximum depth of 8,648 metres (28,373 ft) or 5.373 miles at Milwaukee Deep, which is the deepest point in the Atlantic Ocean and the deepest point not in the Pacific Ocean.
Knowledge 1: Climate of the United States
The climate of the United States varies due to differences in latitude, and a range of geographic features, including mountains and deserts. West of the 100th meridian, much of the US is semi-arid to desert in the far southwestern US, and Mediterranean along the California coast. East of the 100th meridian, the climate is humid continental in the northern areas east through New England, to humid subtropical in the Gulf and South Atlantic regions. Southern Florida is tropical, as is Hawaii and the US Virgin Islands. Higher - elevation areas of the Rocky Mountains, the Wasatch, Sierra Nevada, and Cascade Range are alpine. The West Coast areas in coastal Oregon and Washington are oceanic climate. The state of Alaska, on the northwestern corner of the North American continent, is largely subarctic climate, but with a subpolar oceanic climate in the southeast (Alaska Panhandle), southwestern peninsula and Aleutian Islands. [SEP] Knowledge 2: Climate of Oregon
The Pacific Ocean, the moisture - laden air above it, and the storms moving from it over the Oregon coast, are major factors in the state's precipitation patterns. As humid ocean air flows east from the ocean and encounters the Coast Range, it rises steeply, cools, and loses moisture through condensation, which produces heavy rain. The heaviest precipitation in the state occurs at 2,000 to 4,000 feet (610 to 1,220 m) above sea level in these coastal mountains. At lower elevations along the coast, orographic precipitation is less intense but still produces 60 to 80 inches (1,500 to 2,000 mm) a year.
Knowledge 1: Climate of the United States
The climate of the United States varies due to differences in latitude, and a range of geographic features, including mountains and deserts. West of the 100th meridian, much of the US is semi-arid to desert in the far southwestern US, and Mediterranean along the California coast. East of the 100th meridian, the climate is humid continental in the northern areas east through New England, to humid subtropical in the Gulf and South Atlantic regions. Southern Florida is tropical, as is Hawaii and the US Virgin Islands. Higher - elevation areas of the Rocky Mountains, the Wasatch, Sierra Nevada, and Cascade Range are alpine. The West Coast areas in coastal Oregon and Washington are oceanic climate. The state of Alaska, on the northwestern corner of the North American continent, is largely subarctic climate, but with a subpolar oceanic climate in the southeast (Alaska Panhandle), southwestern peninsula and Aleutian Islands. [SEP] Knowledge 2: Gulf of Mexico
The Gulf of Mexico (Spanish: Golfo de México) is an ocean basin and a marginal sea of the Atlantic Ocean,  largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of the United States, on the southwest and south by Mexico, and on the southeast by Cuba. The U.S. states of Texas, Louisiana, Mississippi, Alabama, and Florida border the Gulf on the north, which are often referred to as the "Third Coast", in comparison with the U.S. Atlantic and Pacific coasts.

Answer: Milwaukee Deep