Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_59 (_percentage_hydropower INTEGER, _percentage_coal VARCHAR, _percentage_nuclear_power VARCHAR)
### Question:
what is the highest % hydropower when % coal is 4.9 and % nuclear power is more than 0?
### Answer:
SELECT MAX(_percentage_hydropower) FROM table_name_59 WHERE _percentage_coal = 4.9 AND _percentage_nuclear_power > 0