Left-wing Syriza party leader Alexis Tsipras, left, waves to his supporters as leader of the right-wing Independent Greeks party Panos Kammenos makes the victory sign after his general election victory, at Syriza's party’s main electoral center in Athens, Sunday, Sept. 20, 2015.
What is the relationship between 'Independent Greeks' and 'Panos Kammenos' in the context of the input sentence.
Options: position held, original broadcaster, chief executive officer, chairperson