*/
protected List<RelationFeaturesExtractor> getFeatureExtractors() {
return Lists.newArrayList(
new TokenFeaturesExtractor(),
new PartOfSpeechFeaturesExtractor(),
new PhraseChunkingExtractor(),
new NamedEntityFeaturesExtractor(),
new DependencyTreeFeaturesExtractor(),
new DependencyPathFeaturesExtractor());
}