Apertium RDF - duplicated entries

[jogracia]

The following query gets information about "abrupt"@en. This retrieves (wrongly, I guess) two different URIs for the corresponding lexical entry

PREFIX ontolex: <http://www.w3.org/ns/lemon/ontolex#>
PREFIX dc: <http://purl.org/dc/elements/1.1/>
PREFIX vartrans: <http://www.w3.org/ns/lemon/vartrans#>
PREFIX lime: <http://www.w3.org/ns/lemon/lime#>
PREFIX lexinfo: <http://www.lexinfo.net/ontology/2.0/lexinfo#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>

SELECT DISTINCT ?lex_entry ?pos ?source ?lexicon ?language ?written_rep
FROM <http://linguistic.linkeddata.es/id/apertium-lexinfo/>
WHERE {
   ?lex_entry ontolex:lexicalForm ?lemon_form ;
      lexinfo:partOfSpeech ?pos ;
      dc:source ?source .

   ?lemon_form ontolex:writtenRep "abrupt"@en ;
      ontolex:writtenRep ?written_rep .

   ?lexicon lime:entry ?lex_entry ;
      lime:language ?language  .
   
}

Result:

	lex_entry	pos	source	lexicon	language	written_rep
1	http://linguistic.linkeddata.es/id/apertium/lexiconEN/abrupt-en	lexinfo:adjective	https://github.com/apertium/apertium-trunk.git	http://linguistic.linkeddata.es/id/apertium/lexiconEN	"en"	"abrupt"@en
2	http://linguistic.linkeddata.es/id/apertium/lexiconEN/abrupt-adj-en	lexinfo:adjective	https://github.com/apertium/apertium-trunk.git	http://linguistic.linkeddata.es/id/apertium/lexiconEN	"en"	"abrupt"@en

Observe the two URIs to represent the same entity:
http://linguistic.linkeddata.es/id/apertium/lexiconEN/abrupt-en
http://linguistic.linkeddata.es/id/apertium/lexiconEN/abrupt-adj-en

Why is this happening?

[jogracia]

Adding here a preliminary answer by Max Ionov (22/5/20):

This is not so much about duplicate URIs, but about the same word from different lexicons. More specifically, the first “abrupt” comes from LexiconEN from either the EN-ES or EN-KK dictionaries. The second ones comes from EN-CA and it’s connected to its strange tagset.

This problem actually unearths several (which were already known): (a) converting the part of speech part of URIs to UD or other standartised tagset and (b) providing metadata about the dictionary from which the lexicon comes from.