It's the answer that led those who have been told for so long ...长句解析
请详细解析奥巴马获胜演讲中的这个长句,
It's the answer that led those who have been told for so long by so many to be cynical,and fearful,and doubtful of what we can achieve to put their hands on the arc of history and bend it once more toward the hope of a better day.
请提供详细的语法分析和解释：）
你们太热情了，相信大家都很认真。真的不好意思：）