Complex sentence: In 1997, he mounted the first two stolpersteins for the Jehovah's Witnesses Matthias and Johann Nobis in St. Georgen, Austria on the suggestion of Andreas Maislinger, founder of Arts Initiative KNIE and the Austrian Holocaust Memorial Service.
Split into simpler sentences: In 1997, the first two stolpersteins were laid in St. Georgen, Austria, commemorating Jehovah's Witnesses Matthias and Johann Nobis. This had been suggested by Andreas Maislinger, founder of Arts Initiative KNIE and the Austrian Holocaust Memorial Service.