1) https://www.easyrdf.org/converter

2) https://drive.google.com/file/d/17Pqpb1vAHj5_QiyJCYuoa0Hq8IEK6DAY/view?usp=sharing

3) https://drive.google.com/file/d/1orqVkbGVv1Y4ATcG3Bz52e9zbRv0FXmM/view?usp=sharing