add negative (no effect)

mfaq_light.py

@@ -44,13 +44,14 @@ _LANGUAGES = [
 ]
 
 class MFAQLightConfig(datasets.BuilderConfig):
-    def __init__(self, *args, language="en", **kwargs):
+    def __init__(self, *args, language="en", negative=True, **kwargs):
         super().__init__(
             *args,
             name=f"{language}",
             **kwargs,
         )
         self.language = language
+        self.negative = negative
     
 class MFAQLight(datasets.GeneratorBasedBuilder):
     BUILDER_CONFIGS = []