Given the question: Information: - Bissau is the capital city of Guinea-Bissau. In 2007 Bissau had an estimated population of 407,424. Bissau is located on the Geba River estuary, off the Atlantic Ocean, and is Guinea-Bissau's largest city, major port, and its administrative and military centre. - The Farim is a river of Guinea - Bissau also known as the Cacheu along its lower length . Its total length is about 257 km. One of its major tributaries is the Canjambari River . Its headwaters are near the northern border of the country , north of Contobeul and close to a bend of the Geba River . It runs west , by the town of Farim and close to Bigene , and broadens into an estuary on whose south shore the town of Cacheu may be found . It is navigable to large ( 2,000 - ton ) ships for about 97 km in , and to smaller vessels much further ; it was an important route for commerce . - Guinea-Bissau, officially the Republic of Guinea-Bissau, is a country in West Africa. It covers with an estimated population of 1,704,000. - A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases a river flows into the ground and becomes dry at the end of its course without reaching another body of water. Small rivers can be referred to using names such as stream, creek, brook, rivulet, and rill. There are no official definitions for the generic term river as applied to geographic features, although in some countries or communities a stream is defined by its size. Many names for small rivers are specific to geographic location; examples are "run" in some parts of the United States, "burn" in Scotland and northeast England, and "beck" in northern England. Sometimes a river is defined as being larger than a creek, but not always: the language is vague. - A sea is a large body of salt water that is surrounded in whole or in part by land. More broadly, "the sea" is the interconnected system of Earth's salty, oceanic watersconsidered as one global ocean or as several principal oceanic divisions. The sea moderates Earth's climate and has important roles in the water cycle, carbon cycle, and nitrogen cycle. Although the sea has been traveled and explored since prehistory, the modern scientific study of the seaoceanographydates broadly to the British "Challenger" expedition of the 1870s. The sea is conventionally divided into up to five large oceanic sectionsincluding the International Hydrographic Organization's four named oceans (the Atlantic, Pacific, Indian, and Arctic) and the Southern Ocean; smaller, second-order sections, such as the Mediterranean, are known as "seas". - An ocean (the sea of classical antiquity) is a body of saline water that composes much of a planet's hydrosphere. On Earth, an ocean is one of the major conventional divisions of the World Ocean, which covers almost 71% of its surface. These are, in descending order by area, the Pacific, Atlantic, Indian, Southern (Antarctic), and Arctic Oceans. The word "sea" is often used interchangeably with "ocean" in American English but, strictly speaking, a sea is a body of saline water (generally a division of the world ocean) partly or fully enclosed by land. After reading the paragraphs above, choose the best answer for the entity that related to 'farim river' with the relationship of 'mouth of the watercourse'. Choices: - atlantic ocean - sea - southern ocean
The answer is:
atlantic ocean