7678
Indonesia 's last case was in 1995 , and it is now the 16th country to be reinfected by a strain of the virus that broke out in northern Nigeria when vaccinations stopped there , then crossed Africa and the Red Sea .
 location contains: Africa, Nigeria
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Africa, Nigeria 
Answer:
 location contains: Africa, Nigeria