If you want to find a short description of a company, or a person, or a product, Google can help you be a little more knowledgeable with a simple search:
who is Larry Ellison?
who is Coca-Cola?
who is iPod?
who is Windows 95?
If you type a query that starts with "who is", Google will show the first words from the most relevant Wikipedia entry.
Queries that start with "what is" return more elaborated definitions and are more appropriate for finding the meaning of a word.
If you want to find information about the location of a company, of a country or a sight, type "where is... ?":
where is Google?
where is Romania?
where is Taj-Mahal?
There's also information about events. You can query Google about holidays using "when is...?":
when is mother's day?
when is Easter?
In this type of query, define is the same as what is, while info and about are the same as who is, so you can just type info oracle or about tarantino.
