It was , for example , at age 13 that Roger Federer finally gave up soccer , and a recognizable childhood , and entered Switzerland 's national tennis training center in Ecublens .
Roger Federer /people/person/nationality Switzerland
PRP VBD , IN NN , IN NN CD WDT NNP NNP RB VBD RP NN , CC DT JJ NN , CC VBD NNP POS JJ NN NN NN IN NNP .
Roger Federer
PERSON
Switzerland
LOCATION
/people/person/nationality