For many people it is an 'article of faith' [=something that is believed without being questioned or doubted] that the economy will begin to improve soon.
In “I gave a book to the boy” the word “a” is an 'indefinite article' and the word “the” is a definite article.
A lot of people pretend to be cowboys, but he's 'the genuine article'. [=he's a real cowboy]
(..) How you're living your life. Where did that come from? - I saw your apartment, the police scanner, All those newspaper articles. You're saving lives, and you're keeping track. I'll bet you know every one of their names. And? (..)2009 TvShow: Heroes Title: Chapter One 'Orientation/Jump, Push, Fall' Season: 4 Episode 1