People & History
A few examples of what you can ask Wolfram|Alpha about:
get information about a person
compare several people
analyze your Facebook data
click on friends' names to analyze their shared Facebook data
get information about a surname
compare given names
get information about a current political leader
get information about a past political leader
get information about an occupation
compare salaries
get the date of a historical event
construct a timeline of events
find the date range associated to a historical period
compare historical periods
get information about a historical country or kingdom
compare multiple historical countries
convert Roman numerals to standard number notation
convert a decimal number to Mayan numerals
compute the current value of a historical quantity of US money
compute historical equivalent value of today's US money
compare inventions
look up an invention property