Annotating PMC articles with OGER and BioBert, according to an hand-crafted Covid-specific dictionary and the 10 different CRAFT ontologies (http://bionlp-corpora.sourceforge.net/CRAFT/): Chemical Entities of Biological Interest (CHEBI), Cell Ontology (CL), Entrez Gene (UBERON), Gene Ontology (biological process (GO-BP), cellular component (GO-CC), and molecular function (GO-MF), NCBI Taxonomy (NCBITaxon), Protein Ontology (PR), Sequence Ontology (SO)