Handle fully specified triples in mapping service

[cthoyt]

In the following code block

curies/src/curies/mapping_service/api.py

Lines 106 to 119 in 5f20618

	def triples( # type:ignore
	self, triple: tuple[URIRef, URIRef, URIRef]
	) -> Iterable[tuple[URIRef, URIRef, URIRef]]:
	"""Generate triples, overriden to dynamically generate mappings based on this graph's converter."""
	subj_query, pred_query, obj_query = triple
	if pred_query in self.query_predicates:
	if subj_query is None and obj_query is not None:
	subjects = self._expand_pair_all(obj_query)
	for subj, pred in itt.product(subjects, self.query_predicates):
	yield subj, pred, obj_query
	elif subj_query is not None and obj_query is None:
	objects = self._expand_pair_all(subj_query)
	for obj, pred in itt.product(objects, self.query_predicates):
	yield subj_query, pred, obj

Add the following else clause:

elif subj_query is not None and obj_query is not None:
    if obj_query in self._expand_pair_all(subj_query):
        yield subj_query, pred_query, obj_query