def init_stats(self):
    """Initialize dicts to hold relation counts."""
    self.relation_stats = {
        "sentences": collections.defaultdict(int),
        "paragraphs": collections.defaultdict(int),
        "entity negatives": collections.defaultdict(int)
    }
Initialize dicts to hold relation counts.
language/labs/drkit/wikidata/preprocessing/distantly_supervise.py