A few examples of what you can ask Wolfram|Alpha about:
Crop Production
get data on crop production in a given country
specify a group of countries
compare crop production between countries
Meat Production
get data on meat production in a given country
specify a type of meat
compare meat production between countries
do computations with land area
get livestock population data
compare livestock data for multiple countries
specify a type of livestock
compare livestock populations
do computations with livestock populations
Food Consumption
get food consumption data for a country
compare consumption in multiple countries
get data on consumption of a particular food
compare food consumption across a group of countries