user: Question: What is the total number of episodes where Alexa Wyatt is the writer?
Columns: ['Season #', 'Series #', 'Title', 'Director(s)', 'Writer(s)', 'Original airdate']
Types: ['real', 'real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 23.0, '"The Drovers Connection"', 'Robert Klenner', 'Chris Hawkshaw & Susan Smith', '27March2002']
SQL:

assistant: SELECT COUNT("Series #") FROM "Table" WHERE "Writer(s)" = 'Alexa Wyatt';