def METHOD_NAME(db_session, project_expo2010, org_uu, user_vetinari):
    """Add Unseen University as a sponsor of Expo 2010."""
    sponsor = models.ProjectSponsorMembership(
        project=project_expo2010,
        member=org_uu,
        granted_by=user_vetinari,
        is_promoted=False,
        seq=2,
    )
    db_session.add(sponsor)
    return sponsor