instruction: Selects all posts tagged smartcontracts.
response: SELECT p2.* FROM Posts AS p1, Posts AS p2 WHERE p1.PostTypeId = 1 AND (p1.Tags LIKE '%smartcontracts%' OR p1.Tags LIKE '%solidity%' OR p1.Tags LIKE '%ethereum%') AND p2.PostTypeId = 2 AND p2.ParentId = p1.Id ORDER BY p1.Id