Complex sentence: For example, in January 1954, a tiger was killed near the Sumbar River in Kopet-Dag whose stuffed skin was put on display in a museum in Ashgabat.
Split into simpler sentences: For example, in January 1954, a tiger was killed near the Sumbar River in Kopet-Dag. Its stuffed skin was put on display in a museum in Ashgabat.