But with oil prices soaring and worries rising about the reliability of gas piped from Russia , Europe must depend heavily on that great industrial-age relic , coal : a cheap , plentiful fuel , but one that emits twice the carbon dioxide of natural gas .
Europe /location/location/contains Russia
CC IN NN NNS VBG CC NNS VBG IN DT NN IN NN VBD IN NNP , NNP MD VB RB IN DT JJ JJ NN , NN : DT JJ , JJ NN , CC CD WDT VBZ RB DT NN NN IN JJ NN .
Europe
LOCATION
Russia
LOCATION
/location/location/contains