2678
He joined the Amal movement when it was headed by Imam Musa Sadr .
 the Amal movement, Imam Musa Sadr
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 the Amal movement, Imam Musa Sadr