id	keyword
hindsight-4067	book
hindsight-4067	university
hindsight-4067	century
hindsight-4067	spectacles
hindsight-4067	mirror
hindsight-4067	use
hindsight-4067	frames
hindsight-4067	eye
hindsight-4067	glasses
hindsight-4067	peter
hindsight-4067	concave
hindsight-4067	rittenhouse