111
The Euphrates and Tigris rivers transform Mesopotamia into almost an island , as they are joined together at the Shatt al-Arab in the Basra Governorate of Iraq , and their sources in eastern Turkey are in close proximity .
 location: Euphrates; location: Tigris; location: Mesopotamia; location: Shatt al-Arab; location: Basra Governorate; location: Iraq; location: Turkey
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Euphrates; location: Tigris; location: Mesopotamia; location: Shatt al-Arab; location: Basra Governorate; location: Iraq; location: Turkey