Database: codebase_community (difficulty: simple)
Question: Mention the display name and location of the user who owned the excerpt post with nonparametric tag.
SQL: SELECT T3.DisplayName, T3.Location FROM tags AS T1 INNER JOIN posts AS T2 ON T1.ExcerptPostId = T2.Id INNER JOIN users AS T3 ON T3.Id = T2.OwnerUserId WHERE T1.TagName = 'nonparametric'