def _resolve(scope, key, context):
    """
    Resolve scope and key to a context item
    Provides very minimal validation of presence

    Parameters
    ----------
    scope: str
        singular variant of scope in context
    key: str
        key to lookup context item in context within scope
    context: dict

    Returns
    -------
    context item: str, dict, etc
    """

    if scope not in context:
        raise ValueError("Scope {0} is not found in context!".format(scope))

    if key not in context[scope]:
        raise ValueError("Key {0} is not found in context!".format(key))

    return context[scope][key]