2700
Splendid terracotta heads and figures found in central Nigeria date back 2,500 years , while recent excavations at Ife -LRB- the sacred city of the Yoruba people -RRB- , Igbo-Ukwu and Benin City have unearthed evidence of high-quality bronze casting from perhaps , at least at Igbo-Ukwu , as early as the ninth century A.D. The court of Benin , centered on Benin City , was the royal and administrative seat of a great kingdom powerful from the 14th to 17th centuries .
 location contains: Nigeria, Benin City; location contains: Nigeria, Igbo-Ukwu; location contains: Nigeria, Igbo-Ukwu; location contains: Nigeria, Benin City
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: Nigeria, Benin City; location contains: Nigeria, Igbo-Ukwu; location contains: Nigeria, Igbo-Ukwu; location contains: Nigeria, Benin City