 Brazil ’ s Civil Aviation Agency said the cause of the crash was impossible to say until the Boeing 737's two recorders, found by search teams, were examined.
<fluency>  Brazil ’ s Civil Aviation Agency said the cause of the crash was impossible to say until the Boeing 737's two recorders, found by search teams, were examined.
 Brazil ' s Civil Aviation Agency said the cause of the crash was impossible to say until the Boeing 737's two recorders, found by search teams, were examined.