_:n6685ca5323734b10af1d0154248cddf4xb1
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://flutter-learn.ir/question/%D9%86%D9%88%D8%B4%D8%AA%D9%86-%D9%85%D9%86%D8%B7%D9%82-%D8%A8%D8%B1%D9%86%D8%A7%D9%85%D9%87/>