Complex sentence: According to Ganesan, the main theme of "Andha Naal" is patriotism; for him the film apprises the audience that if a country does not appreciate its talented young men's efforts, they could turn against the nation.
Split into simpler sentences: According to Ganesan, the main theme of "Andha Naal" is patriotism. If a country does not appreciate its talented young men's efforts, they could turn against the nation.