Lexicon queries
Querying the lexicon is in many ways similar to querying annotations in graphs.
with CorpusContext(config) as c:
q = c.query_lexicon(c.lexicon_phone).filter(c.lexicon_phone.label == 'aa')
print(q.all())
The above query will just return one result (as there is only one phone type with a given label) as opposed to the multiple results returned when querying annotations.