Original sentence: Ferdowsi, the author of the Persian national epic poem, the Book of Kings (1010), recounts the history of ancient Iran mentions that the lion was the insignia used by Rostam, the legendary national hero of Iran.From 10th century onwards, the emblem (with an added sword) remained the official symbol of Iran until 1979 revolution, when Ayatollah Khomeini, the founder of the Islamic Republic ordered the removal of the "Lion & Sun" from public life and government organisations
Edited sentence: Ferdowsi the greatest of the Persian epic poet whose Book of Kings (1010) recounts the history of ancient Iran mentions that the lion was the insignia used by Rostam, the legendary national hero of Iran.From 10th century onwards, the emblem (with an added sword) remained the official symbol of Iran until 1979 revolution, when Ayatollah Khomeini, the founder of the Islamic Republic, who was opposing to the concept of the Iranian-nationalism, ordered the ban and removal of the "Lion & Sun" from public life and government organisations