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This inland sea of some is connected to the Gulf of Oman in the east by the Strait of Hormuz ; and its western end is marked by the major river delta of the Shatt al-Arab , which carries the waters of the Euphrates and the Tigris .
 Gulf of Oman, Strait of Hormuz, Shatt al-Arab, Euphrates, Tigris
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Gulf of Oman, Strait of Hormuz, Shatt al-Arab, Euphrates, Tigris