human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Name, Year commissioned, Gross head (metres), Installed capacity (megawatts), Average annual output (million KWh)
###Question: What is the Average annual output for Culligran power station with an Installed capacity less than 19?
gpt
SELECT AVG Average annual output (million KWh) FROM table WHERE Name = culligran AND Installed capacity (megawatts) < 19