def is_valid_request(self, request):
        auth_params = request.META.get("HTTP_AUTHORIZATION", [])
        return self.is_in(auth_params) or self.is_in(request.REQUEST)
Annotates the tokens with lemmata for plural nouns and conjugated verbs,
dataset/ETHPy150Open django-tastypie/django-tastypie/tastypie/authentication.py/OAuthAuthentication.is_valid_request--crossover with--dataset/ETHPy150Open clips/pattern/pattern/text/nl/__init__.py/find_lemmata