You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "This canal is known as the second longest in the world and its main tributary being the Canandaigua Outlet, what canal am i speaking of?" whose answer is Erie Canal.
Each document should contain about 30 words, and these documents should contain useful information.

Query: second longest canal in the world main tributary Canandaigua Outlet
Useful Output:

Doc 1: ------- Two main tributaries to this section of the Canal, Mud Creek near Macedon and Canandaigua Outlet below Newark, apparently contrib- ute large
Doc 2: • Sucker Brook from Canandaigua Lake upstream in Ontario County. • West River from Canandaigua Lake upstream in Ontario County. • Yawgers Creek
Doc 3: The New York State Barge Canal system is in many ways a tributary of the Hudson River. It still connects the Great Lakes, the Finger Lakes, and
Doc 4: Another historically important water feature is the Canandaigua Outlet, which flows north from  Canandaigua Outlet was a tributary of the Clyde River. It was
Doc 5: Below is a list of the world's major water bodies including oceans, gulfs, bays, seas, rivers, and lakes.