The NamedEntityFinderTrainer function takes training data and outputs a Max Entropy data model. The function is based on OpenNLP, and follows its annotation. For more information on OpenNLP, see https://opennlp.apache.org/docs/1.8.4/manual/opennlp.html.
The trainer supports only the English language.
NamedEntityFinder uses files that are preinstalled on the ML Engine. For details, see Preinstalled Files That Functions Use.