Suppose The Harry Potter book series, written by J.K. Rowling, tells the story of a young wizard, Harry Potter, and his adventures at Hogwarts School of Witchcraft and Wizardry. The series consists of seven books, starting with "Harry Potter and the Philosopher's Stone" and ending with "Harry Potter and the Deathly Hallows."
Can we infer that "The Harry Potter series only has three books."?