input: Background: Southern California contains a Mediterranean climate, with infrequent rain and many sunny days. Summers are hot and dry, while winters are a bit warm or mild and wet. Serious rain can occur unusually. In the summers, temperature ranges are 90-60's while as winters are 70-50's, usually all of Southern California have Mediterranean climate. But snow is very rare in the Southwest of the state, it occurs on the Southeast of the state.
  Question: How frequent is snow in the Southwest of the state?
  Answer:<extra_id_0>.
output: <extra_id_0> very rare<extra_id_1>