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_98 (land_area__km²_ INTEGER, country VARCHAR, population_density__pop_per_km²_ VARCHAR)
### Question:
What is the land area of Switzerland with a population density fewer than 188 km²?
### Answer:
SELECT AVG(land_area__km²_) FROM table_name_98 WHERE country = "switzerland" AND population_density__pop_per_km²_ < 188