id	keyword
esrj-74390	shale
esrj-74390	gas
esrj-74390	shale gas
esrj-74390	development
esrj-74390	china
esrj-74390	water
esrj-74390	exploration
esrj-74390	industry
esrj-74390	resources
esrj-74390	energy
esrj-74390	gas exploration
esrj-74390	gas development
esrj-74390	united
esrj-74390	states
esrj-74390	national