user: Question: How many episodes did Alison Maclean direct?
Columns: ['No. in series', 'No. in season', 'Title', 'Directed by', 'Written by', 'Original air date', 'Production code']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'real']
Sample row: [78.0, 1.0, '" Blood Ties (Part 1)"', 'Alan Taylor', 'Anya Epstein', 'October17,1997', 601.0]
SQL:

assistant: SELECT COUNT("Written by") FROM "Table" WHERE "Directed by" = 'Alison Maclean';