expression = ~income_a & ~income_c2 & (income_b1 | income_b2 | income_c1 | income_c2)
fully_evaluated = True
income_b1    income_b2    income_c2    income_a    income_c1    expression_value
-----------  -----------  -----------  ----------  -----------  ------------------
False        False        False        False       False        False
False        True         False        False       False        True
False        False        True         False       False        False
True         False        False        False       False        True
False        False        False        False       True         True
False        False        False        True        False        False
