我尝试在nodejs客户端中获取实体属性的实际值，但只得到字符串Ids。我尝试了许多不同的版本。getValue（）或asAttribute或getAttribute，但只获取错误消息。如何检索属性的实际值？
这是我的代码

export async function getMarketByTitle(title: string) {
  const database = "know_graph"; // Replace this with the name of your TypeDB database
  const { client, session, transaction } = await openTransaction(database);

  try {
    const query = `
      match
      $m isa market, has title "${title}", has background_information $background_information;
      $m has title $m_title;
      get $m, $m_title, $background_information;
    `;

    const iterator = await transaction.query.match(query);
    let market;
    for await (const answer of iterator) {
      const mConcept = answer.get("m");
      const mTitle = answer.get("m_title");
      const backgroundInformation = answer.get("background_information");
      const checkEntity = mConcept.isEntity();
      const checkAttribute = mTitle.isAttribute();

      market = {
        id: mConcept.toString(),
        title: msTitle.toString(),
        backgroundInformation: backgroundInformation.toString(),
        entity: checkEntity.toString(),
        attribute: checkAttribute.toString
      };

      return market;
    }```