Input (grade 13): After Khomeini gained power, skirmishes between Iraq and revolutionary Iran occurred for ten months over the sovereignty of the disputed Shatt al-Arab waterway, which divides the two countries.
Output (grade 10): After Khomeini gained power, small battles between Iraq and revolutionary Iran happened for ten months. They were fought over who controlled the the disputed Shatt al-Arab waterway, which divides the two countries.