Database: world_development_indicators
Question: What is the series note description of the series "SP.DYN.TO65.MA.ZS" which covers the topic "Health: Mortality" in 1967?
SQL: SELECT T2.Description FROM Series AS T1 INNER JOIN SeriesNotes AS T2 ON T1.SeriesCode = T2.Seriescode WHERE T1.SeriesCode = 'SP.DYN.TO65.MA.ZS' AND T1.Topic = 'Health: Mortality' AND T2.Year = 'YR1967'