All of Li Ming's netizens are not software engineers; those who know Dachu's directors through Li Ming are software engineers; a netizen from Li Ming met Wang Gang through Li Ming. From the above statement, which of the following can be concluded? ['Wang Gang is not a software engineer.', 'Wang Gang is not a director of Dachu.', 'Wang Gang is a software engineer.', 'Wang Gang is a director of Dachu Company.']