code: function getClaimValue(entity, prop) {
      if (!entity.claims) return;
      if (!entity.claims[prop]) return;
  
      let value, c;
      for (let i = 0; i < entity.claims[prop].length; i++) {
          c = entity.claims[prop][i];
          if (c.rank === 'deprecated') continue;
          if (c.mainsnak.snaktype !== 'value') continue;
  
          value = c.mainsnak.datavalue.value;
          if (c.rank === 'preferred') return value;  // return immediately
      }
      return value;
  }
docs: Get the claim value, considering any claim rank.. - disregard any claims with "deprecated" rank - accept immediately any claim with "preferred" rank - return the latest claim with "normal" rank