Question: What is the cause of death of Kaliman I Of Bulgaria's mother?
Sentence (from "Ana-Neda"): Ana- Neda( Bulgarian and; fl. 1323- 1324) was the Empress consort of Bulgaria briefly in 1323- 1324 as the spouse of" Despot of Vidin" Michael Shishman who was elected as Emperor of Bulgaria in 1323.
Relevant evidence: No