function [recovery_results, sigma_w2, thresholds, C_n, A, Lambda, Lambda_C, x] = query2(FAR_N, FAR_M, sigma, LASSO_lambda)
    global trail_times method;

    if FAR_N == 2
        lambda_length = 1;
    else
        lambda_length = FAR_M;
    end
    
    filename = ...
        "./data3/" + ...
        "FAR" + "_" + ...
        string(FAR_N) + "_" + ...
        string(FAR_M)+ "_" + ...
        method + "_" + ...
        string(sigma) + "_" + ...
        string(lambda_length) + "_" + ...
        string(LASSO_lambda) + "_" + ...
        trail_times + ...
        ".mat";

    filename = ...
        "./data3/" + ...
        "FAR" + "_" + ...
        string(FAR_N) + "_" + ...
        string(FAR_M)+ "_" + ...
        method + "_" + ...
        string(sigma) + "_" + ...
        trail_times + ...
        ".mat";

    load( ...
        filename, ...
        "recovery_results", "sigma_w2", "thresholds",...
        "C_n", "A", "Lambda", "Lambda_C", "x" ...
    );

    return; 
end