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_83 (isolation__km_ INTEGER, municipality VARCHAR, elevation__m_ VARCHAR)
### Question:
What is the average Isolation in the municipality of Sunndal at an elevation of more than 1850?
### Answer:
SELECT AVG(isolation__km_) FROM table_name_83 WHERE municipality = "sunndal" AND elevation__m_ > 1850