I think we should always check for prepositions when we trigger on "concerts" because the intent could be different. For example, I could search "phoenix concerts", and I would get concerts from Phoenix, AZ:

![screen shot 2013-12-19 at 11 41 09 pm](https://f.cloud.github.com/assets/81969/1788572/2b5324ba-6931-11e3-93bf-6b1e6ab0ed56.png)

But what I was actually searching for were concerts from the band Phoenix: https://www.songkick.com/artists/271893-phoenix. It's not that big of a deal, and the example that I gave might not be all that bad, but we should avoid triggering on just `concerts <place>` for now since we don't have a way to verify if the place is actually relevant to the user (the query "banana concert" was funny--didn't know that there was a place called Banana in Australia). 

As a side-note, the `isRelevant` function wasn't all that useful for locations? It's worked quite well for the weather instant answer (https://github.com/duckduckgo/zeroclickinfo-spice/blob/master/share/spice/forecast/forecast.js#L19), but it may be different in this case.