Table schema:
CREATE TABLE table_name_31 (capacity__mw_ INTEGER, turbines VARCHAR, size__mw_ VARCHAR, wind_farm VARCHAR)

Question: What is the sum of the capacities for Carrigh wind warm that has a size of 0.85 MW and more than 3 turbines?
SQL: SELECT SUM(capacity__mw_) FROM table_name_31 WHERE size__mw_ = "0.85" AND wind_farm = "carrigh" AND turbines > 3