Knowledge base is one of the departments where Alexa has lagged Assistant. After all, it’s pretty tough to compete with Google when it comes to a sheer breadth of knowledge. Wolfram Alpha is a pretty good place to start. The answer engine offers a wide cross-section of curated data, with a heavy focus on math and sciences.

Starting this week, U.S.-based Alexa users will get access to that information, with rollout completing over the coming weeks and months. A few of the things you’ll be able to ask Wolfram Alpha via Alexa:

Alexa, what is the billionth prime number? Alexa, how high do swans fly? Alexa, what is x to the power of three plus x plus five where x is equal to seven? Alexa, how fast is the wind blowing right now? Alexa, how many sheets of paper will fit in a binder? Alexa, how long until the moon rises?

Wolfram pulls its own information for a wide range of sources, including its own Wolfram Mathematica and third-party resources, including Crunchbase. Alexa, for its part, is building up its own external knowledge base from a range of sites, including iMDB, AccuWeather, Yelp and, perhaps, most importantly, Wikipedia.