baseExtractor,
new Preceding(3),
new Covered(),
new Following(3));
this.verbTensePatternExtractor = new NearbyVerbTenseXExtractor();
this.sectionIDExtractor = new SectionHeaderExtractor();
this.closestVerbExtractor = new ClosestVerbExtractor();
this.timeXExtractor = new TimeXExtractor();
this.genericExtractor = new EventPropertyExtractor();
this.dateExtractor = new DateAndMeasurementExtractor();
this.umlsExtractor = new UmlsSingleFeatureExtractor();