Suppose The Harry Potter book series, written by J.K. Rowling, follows the story of a young wizard named Harry Potter and his friends Hermione Granger and Ron Weasley as they attend Hogwarts School of Witchcraft and Wizardry. The series consists of seven books, each detailing a year in Harry's life at Hogwarts.
Can we infer that "J.K. Rowling wrote a total of 10 books in the Harry Potter series."? Yes, no, or maybe?