In the syntactic analysis of the following sentence I doubt:
"They then took the matter to a three-person jury of appeal,
specially convened to hear the protest"
The last part in bold (speacially convened to hear the protest) could be 1) an adjunct of reason/cause since it is seprated from the main sentence by a comma. Or on the other hand it could be 2) an appositional relative clause that is post modifying the noun head "jury".
Can you help me? Thanks in advance!