N3 parser: do not create formulas if the Turtle mode is activated
Closes
@@ -404,7 +404,7 @@ class SinkParser:
else:
self._genPrefix = uniqueURI()
- if openFormula is None:
+ if openFormula is None and not turtle:
if self._thisDoc:
self._formula = store.newFormula(thisDoc + "#_formula")
else:
