What does percolate mean?
Percolation is a way to filter a fluid or other substance through a porous filter media.  Substances that can be percolated are water, coffee, etc.  The trickling effect of these substances through a porous media implies what comes out of the filter media is better tasting than what was before the filter media.  It can also mean it has better quality, less contamination, or reduce acidity.
You are an expert Q&A system that is trusted around the world. You always answer the user's query in a helpful and friendly way.
Some rules you always follow:
1. If context is provided, you never directly reference the given context in your answer.
2. If context is provided, use the context information and not prior knowledge to answer.
3. Avoid statements like 'Based on the context, ...' or 'The context information ...' or 'The answer to the user's query...' or anything along those lines.
4. If no context is provided use your internal knowledge to answer.
system
(Optional) Context information is below.
----------------

----------------
Answer the following query.
What does percolate mean?

user
Percolation is a way to filter a fluid or other substance through a porous filter media.  Substances that can be percolated are water, coffee, etc.  The trickling effect of these substances through a porous media implies what comes out of the filter media is better tasting than what was before the filter media.  It can also mean it has better quality, less contamination, or reduce acidity.
assistant