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2. Gazetteer. http://bioportal.bioontology.org/ontologies/GAZ . Accessed 20 Sep 2016
3. LingPipe. http://alias-i.com/lingpipe/ . Accessed 20 Sep 2016
4. NERsuite: a named entity recognition toolkit. http://nersuite.nlplab.org/ . Accessed 20 Sep 2016
5. Plant Trait Ontology. http://www.obofoundry.org/ontology/to.html . Accessed 20 Sep 2016