def get_term_name(term_id, ont_id_to_og, ont_id="17"):
    """
    Given a term ID, return the term name.

    Parameters
    ----------
    term_id: The ontology term ID.
    ont_id_to_og: The ontology mapping.
    ont_id: The ontology ID

    Returns
    ---------
    The term name.

    """
    og = ont_id_to_og[ont_id]
    return og.id_to_term[term_id].name