def METHOD_NAME(session):
    source = f"https://www.ndlegis.gov/assembly/{session}/committees"
    response = requests.get(source)
    content = lxml.html.fromstring(response.content)
    committee_names = set()
    committees = content.xpath(".//div[@class='grouping-wrapper']//a/text()")
    for committee in committees:
        committee_names.add(committee.strip())
    return committee_names