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 .
Akihito /people/person/children Prince Akishino
JJ NNS VBD NNP IN NNP NNP , DT NN IN NNP NNP POS JJ NN , NNP NNP , VBZ JJ , VBG NNS IN DT JJ NN NN TO CD IN DT NN POS JJS JJ NNS CC VBG IN NN JJ NN NNS WDT MD VB DT JJ NN TO VB DT NN .
Akihito
PERSON
Prince Akishino
PERSON
/people/person/children