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]
(..) Oh,that was a dead end. Scrambled eggs are as good as they're ever going to be. So... fish? I read an article about japanese scientists who inserted dna from luminous jellyfish into other animals, and I thought,"hey,fish nightlights. " Fish nightlights? It's a billion-dollar idea. Mum's the word. (..)2007 TvShow: The Big Bang Theory Title: The Luminous Fish Effect Season: 1 Episode 4