Complex sentence: His surname "Erkin" (means "a person who can take decision objectively without being impressed by an outside influence in any circumstances") was one of 37 assigned personally by Atatürk.
Split into simpler sentences: His surname "Erkin" means "a person, who can take decision objectively without being impressed by an outside influence in any circumstances". He was one of 37 assigned personally by Atatürk.