user: Question: What is Letter, when Example Spelled Checked is "tin /tɪn/ ("tin")"?
Columns: ['Letter', 'Pronunciation spelled free', 'Pronunciation spelled checked', 'Example spelled free', 'Example spelled checked']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['a', 'aː', 'ɑ', 'later /ˈlaːtər/ ("later")', 'lat /lɑt/ ("lat")']
SQL:

assistant: SELECT "Letter" FROM "Table" WHERE "Example spelled checked" = 'tin /tɪn/ ("tin")';