def generate_capabilities(top_n=10):
    """
    Returns top N capabilities based on performance and efficiency.

    Args:
        top_n (int): Number of top capabilities to return.

    Returns:
        list: List of tuples containing capability name, score, and time.
    """
    # Assuming the data is stored in a list
    capabilities = [
        ('evolved_verified_generate_test_1768680667', 4235.89001196408, 51, 8305.7),
        ('verified_default', 4235.0, 51, 8303.9),
        ('evolved_verified_fib_fast_1769055768', 4235.0, 51, 8303.9)
    ]

    # Sort the capabilities based on score in descending order
    sorted_capabilities = sorted(capabilities, key=lambda x: x[1], reverse=True)

    # Return top N capabilities
    return sorted_capabilities[:top_n]