Implement NER and POS

[txetxedeletxe]

The current system uses entities from article names / infobox as subjects of the relations, and looks for objects for a list of target relations. This potentially limits the relations that can be extracted from the text, implementing NER (Name Entity Recognition) and POS classification will allow to capture these relations.

[txetxedeletxe]

This is not super important as the primary use-case consists in getting relations for a character given its fandom article, thus the subject of the relation is already given in those cases.