Table schema:
CREATE TABLE table_name_81 (town VARCHAR, population_rank VARCHAR, municipality VARCHAR, population__2001_ VARCHAR)

Question: What town is from the molėtai district municipality and has a population rank of 187 and a population less than 470 in 2001?
SQL: SELECT town FROM table_name_81 WHERE municipality = "molėtai district municipality" AND population__2001_ < 470 AND population_rank = 187