Complex sentence: Kaisyn Kuliev died in 1985 and buried in the garden of his house by poet's own will and where Kaisyn Kuliev Memorial Museum was opened few years later.
Split into simpler sentences: Kaisyn Kuliev died in 1985 and was buried in the garden of his house at the behest of his Will. The Kaisyn Kuliev Memorial Museum was opened at that location a few years later.