def get_pages(tx):
    result = tx.run("MATCH (p:Page) RETURN p.name AS name")
    return [record["name"] for record in result]

def get_links(tx):
    result = tx.run("MATCH (p1:Page)-[:LINKS_TO]->(p2:Page) RETURN p1.name AS from, p2.name AS to")
    links = {}
    for record in result:
        if record["from"] not in links:
            links[record["from"]] = []
        links[record["from"]].append(record["to"])
    return links