input: Write a python function to predict temperature for a given day using linear regression.
  assert predict_temperature(11) == 25.5  # Adjust the value according to your model's prediction
  assert predict_temperature(12) == 26.0  # Adjust the value according to your model's prediction
  assert predict_temperature(5) == 22.0  # Adjust the value according to your model's prediction
output: def predict_temperature(day):
      # Assuming a simple linear regression model with an intercept of 20 and a slope of 0.5
      intercept = 20
      slope = 0.5
      temperature = intercept + slope * day
      return temperature