Marsball is LEADERG robot #4. (L4)

L4 is an A.I. component for APP and website.

L4 knows many things. For example, you can ask the following things. Hello ! Good morning! / Good night ! What's your name ? How old are you ? / What's your age ? Do you have brothers or sisters? What can you do? Tell my about APPLE! What do you think about iPhone/iPod? How to differentiate you from Siri ? How many languages can you speak? Goodbye./See you.