id	keyword
educationr-1431	khan
educationr-1431	students
educationr-1431	education
educationr-1431	school
educationr-1431	children
educationr-1431	academy
educationr-1431	teacher
educationr-1431	mathematics
educationr-1431	review
educationr-1431	learning
educationr-1431	time
educationr-1431	classroom
educationr-1431	world