1) IF YOU WANT TO ANSWER AFFIRMATIVELY:
Oui, nous sommes intelligents.
IF YOU WANT TO ANSWER NEGATIVELY:
Non, nous ne sommes pas intelligents.
2) Je suis au restaurant. (Basically: Je suis (location).)
3) Ce sont des feuilles de papier.
In simple terms, 'artificial intelligence' is an area of computer science that deals with giving machines the ability to seem like they have human intelligence.
Source: www.merriam-webster.com