Table: kiwirail_locomotives
Columns: class
introduced
number_in_class
number_in_service
power_output_kw

Question: What is the power output for class 5?
SQL: SELECT "power_output_kw" FROM kiwirail_locomotives WHERE "number_in_class" = 5

Question: Which class has a power output larger than 700 and a class of 48?
SQL: SELECT "class" FROM kiwirail_locomotives WHERE "power_output_kw" > 700 AND "number_in_class" = 48