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Knowledge base is one of the departments where Alexa has lagged Assistant. After all, it’s pretty tough to compete with Google when 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 roll out 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 MDb, Accuweather, Yelp and, perhaps, most importantly, Wikipedia.