Task: Question Generation
Input (English): Context : Isias, surnamed Philostorgos or Philostorgus (Greek: η Ισίας Φιλόστοργος, meaning Isias the loving one) was a Princess of Cappadocia who lived in the 1st century BC. Through her marriage to King Antiochus I Theos of Commagene, she became the Queen of Commagene. 
Answer : Antiochus I Theos of Commagene
Output (English): What is Isias's spouse's name?