9793
 Japanese officials said Tuesday that Princess Kiko , the wife of Emperor Akihito 's second son , Prince Akishino , is pregnant , raising hopes for a long-awaited male heir to one of the world 's oldest hereditary monarchies and throwing into doubt imperial law revisions that would allow a female line to hold the throne . 
 children: Akihito, Prince Akishino
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
Answer:
 children: Akihito, Prince Akishino