anchor.diff:          for p in data.Commons.People.Persons do
           select (p.Name, p.``Date of birth``)
       } |> Seq.head |> should equal ("Jack Abramoff", "1958-02-28")
  +
  +[<Test>]
  +let ``Can handle Ghana multiple ISO 3 codes``() =
  +    let ghana = data.``Time and Space``.Location.Countries.Individuals.Ghana
  +    ghana.``ISO Alpha 3`` |> Seq.toArray |> should equal [|"GHA"; "GH"|]
  
positive.code: 
  let findCountryByFifaCode code = 
      query { for x in data.``Time and Space``.Location.Countries do 
              where (x.``FIFA Code`` = code) 
              exactlyOne }
  
  [<Test>]
  
negative.code: 
      firstOlympicCity.Name |> should equal "Athens"
  
  [<Test>]
  let ``Can execute query that checks for not null``() =
      let p = query {
  