A way of Cataloging market facts and mapping them to an idea

I get a ton of market data: industry reports, anecdotes from sales and sales calls, demos with customers, interviews, support calls with customers, etc. 

My problem is this: how do I tie these various market facts to an idea/feature? I need to be able to recall key facts so that I can appropriately justify how features are prioritized. Moreover this helps me 'prove out' an idea by pointing to a key fact from an interview or document. 

Right Now I do this by keeping a table in the notes section for a product and type out each market fact/anecdote listing the corresponding idea/feature in the table. It works, but its not a very slick method of quickly matching a feature to the facts. 

Any thoughts?