Complex sentence: Swapna Menon was cast as the daughter of Thankappan (Innocent); her characterization was similar to that of the female version of Sudheesh's character Chanthu in "Manichithrathazhu".
Split into simpler sentences: Swapna Menon was cast in a role as the daughter of Thankappan (Innocent). Her characterization was similar to the female version of Sudheesh's character (Chanthu) in "Manichithrathazhu".