Original sentence: The Arab League hears in a speech where Nabil Shaath compares "Israeli actions in the West Bank towns of Jenin and Nablus to the 1982 massacres of hundreds of Palestinans", probably referring to Israel's part in the Sabra and Shatila Massacre
Edited sentence: The Arab League hears in a speech where Nabil Shaath compares "Israeli actions in the West Bank towns of Jenin and Nablus to the 1982 massacres of hundreds of Palestinans", probably referring to Israel's unconfirmed, alleged part in the Sabra and Shatila Massacre