user: Question: the episode directed by Art Dielhenn was what number in the series? 
Columns: ['No. in series', 'No. in season', 'Title', 'Directed by', 'Written by', 'Original air date', 'Production code']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['152', '1', '"Same Time Next Year"', 'Jay Sandrich', 'Ehrich Van Lowe', 'September 20, 1990', '0701']
SQL:

assistant: SELECT "No. in series" FROM "Table" WHERE "Directed by" = 'Art Dielhenn';