Instructions: Given a passage and a question, find the answer to the question based on the passage. The answer should consist of only one word that lies in the span of only one of the sentences in the passage.
Input: Paragraph: In Judaism and Christianity , its authorship is attributed to a prophet who lived in the Assyrian Period and named himself in the first verse , Obadiah . His name means `` servant of Yahweh '' .
Question: who wrote the book of obadiah in the bible

Output:
Obadiah