But the sensors are not evenly distributed , with the greatest number in Europe , few in Africa and South America , and none covering the 70 percent of Earth 's surface that is water .
Earth /location/location/contains Europe
Earth /location/location/contains South America
Earth /location/location/contains Africa
CC DT NNS VBP RB RB VBN , IN DT JJS NN IN NNP , JJ IN NNP CC NNP NNP , CC NN VBG DT CD NN IN NNP POS NN WDT VBZ NN .
Earth
LOCATION
Europe
LOCATION
/location/location/contains
Earth
LOCATION
South America
LOCATION
/location/location/contains
Earth
LOCATION
Africa
LOCATION
/location/location/contains