let
Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
#"Changed Type" = Table.TransformColumnTypes(Source,{{"Column1", type text}}),
#"Split Column by Delimiter" = Table.SplitColumn(#"Changed Type","Column1",Splitter.SplitTextByAnyDelimiter({".","?","!"}))
in
#"Split Column by Delimiter"