What does it matter? Wtf is wrong with people these days asking questions like this? Your teacher lied to you... there ARE dumb questions and you SHOULD refrain from asking them. You´re wasting everyones time just because you decide to not bother reading information already aviable (and easy to find) and don´t deserve to get spoon-fed a answer. Or do you not know how to google for a name? The ONLY excuse you could have for this is if you where under 10 oder over 90 years of age because every 11 year old can google for information these days.