8797
It is not lost on Turkey , deeply aware of its imperial past , that the conversation the pope quoted in his speech took place here : the Byzantine emperor Manuel II Paleologus , during one of the Ottoman sieges before the Christian empire crumbled and Constantinople became Istanbul , recorded a conversation in 1391 that he said he had had with a '' learned Persian . ''
 location contains: Turkey, Istanbul
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: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
Answer:
 location contains: Turkey, Istanbul