Add section on annotation

[cmungall]

This guide is really fantastic

I propose additional sections of usage of ontologies, in particular

1. NLP/NER. This could include material on how lexical info is captured in ontologies. Can take some from here https://github.com/obophenotype/uberon/wiki/Using-uberon-for-text-mining
2. biological annotations
   • where do they come from?
     • literature curation (looks like there is a to-be-written section on this?)
     • automated and semi-automated
       • phylogenetic
       • OWL inference
       • NLP eg relation extraction
   • how are they used?
     • use of ontologies to drive search on genome resource portals
     • building gene sets
     • semantic similarity
     • enrichment

You could draw a lot of material from https://gohandbook.org/