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: "What an event in the annual cycle of tropical cyclone formation,that was the predecessor to the six depressions throughout the year, of which five intensified into cyclonic storms?" whose answer is 1999 North Indian Ocean cyclone season.
Each document should contain about 30 words, and these documents should contain useful information.

Query: what initiates the formation of tropical depressions
Useful Output:

Doc 1: If that takes place within the vicinity of a low-pressure system or an already established tropical storm or tropical depression, it can fuel that and make it
Doc 2: Warm water powers the tropical cyclone and is the most important factor in its development. As water vapor (water in the gaseous state) rises,
Doc 3: For a tropical storm to develop, the temperature of water must be 26 oC which triggers the uplift mechanism. Trade winds converge along the
Doc 4: First, it starts as a tropical disturbance. Then, with cyclonic circulation and faster wind speeds, it becomes a tropical depression. If the wind keeps getting
Doc 5: Violent storms giving way to cyclonic activity form over the ocean, often beginning as a tropical wave—a low pressure area that moves