Instructions: Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.
Input: Context: Ptolemy V Epiphanes (Ancient Greek: , Ptolemaios Epiphanes, reigned 204--181 BC), son of Ptolemy IV Philopator and Arsinoe III of Egypt, was the fifth ruler of the Ptolemaic dynasty.
Question: What was the name of Ptolemy V Epiphanes mother?
Output:
arsinoe iii of egypt