Complex sentence: They were some speculations that she was possibly poisoned either by Safiye Sultan, Halime Sultan or Kösem Sultan, she was buried near Mehmet III's tomb at the courtyard of Hagia Sophia.
Split into simpler sentences: They were some speculations that she was possibly poisoned either by Safiye Sultan, Halime Sultan, or Kösem Sultan. She was buried near Mehmet III's tomb at the courtyard of Hagia Sophia.