def encode_example(
      self, *,
      claim, evidence,
      claim_label, evidence_label,
      metadata,
      wikipedia_url, sentence_id):
    """Encode a single example from text/integers to a single TF example.

    Args:
      claim: Text of the claim
      evidence: Text of the evidence
      claim_label: The label as an integer
      evidence_label: The label as an integer
      metadata: Metadata dictionary, not needed, useful for debugging
      wikipedia_url: The wikipedia_url of the evidence, if any
      sentence_id: The sentence_id of the evidence, if any

    Returns:
      An example mapping dictionaries to TF tensor ready for TF to batch
    """
    raise NotImplementedError()
Encode a single example from text/integers to a single TF example.

    Args:
      claim: Text of the claim
      evidence: Text of the evidence
      claim_label: The label as an integer
      evidence_label: The label as an integer
      metadata: Metadata dictionary, not needed, useful for debugging
      wikipedia_url: The wikipedia_url of the evidence, if any
      sentence_id: The sentence_id of the evidence, if any

    Returns:
      An example mapping dictionaries to TF tensor ready for TF to batch
    
language/serene/preprocessing.py