text: # Import statsmodels.formula.api
  import statsmodels.formula.api as smf 
  
  # Define the regression formula
  FamaFrench5_model = smf.ols(formula='Portfolio_Excess ~ Market_Excess + SMB + HML + RMW + CMA ', data=FamaFrenchData)
  
  # Fit the regression
  FamaFrench5_fit = FamaFrench5_model.fit()
  
  # Extract the adjusted r-squared
  regression_adj_rsq = FamaFrench5_fit.rsquared_adj
  print(regression_adj_rsq)
  