Also, the user wants only the text output, no markdown. So I'll just list the lines with the substitutions. Let me test a small part first. For example:
Sundarapandian is a person's name, so that's a proper noun. Tamil is a language, but in this context, it's part of the title of the movie, so maybe it's a proper noun? Or is it a language? Hmm. The user probably wants to leave "Tamil" as is since it's part of "Sundarapandian Tamil Movies". "Movies" and "Download" are common nouns. "A Comprehensive Guide" are all common words. Sundarapandian Tamil Movies Download
"popular": variants like "well-known", "renowned", "celebrated". "film actor": "cinematic performer", "movie star", "actor in films". "director": "filmmaker", "screenwriter", "movie director". "producer": "production head", "executive producer", "film producer". "who": "which", "that", "who". "has been active": "has remained engaged", "has continued participating", "has stayed involved". "film industry": "cinematic field", "movie sector", "film production domain". "over two decades": "more than twenty years", "approximately twenty years", "over two decades". Then the rest of the text: "He has appeared in numerous films, often playing lead roles in action, comedy, and drama genres." Proper nouns here are none. So each word needs to be replaced. Also, the user wants only the text output, no markdown
Another thing to watch out for is consistency in tense and part of speech. If the original word is a noun, the variants should also be nouns. The same goes for adjectives and verbs. For instance, "convenient" might become easily available. For example: Sundarapandian is a person's name, so
I think the key is to find three relevant synonyms per word, ensuring the sentences still make sense. Also, maintain the original punctuation and structure. Let me proceed step by step, taking each word in the input text and generating three synonyms, then putting them into the v1 format. Double-checking for any proper nouns to leave as-is.
I should be careful not to alter the structure or punctuation. Also, the user specified to output only the text, so no explanations. Let me start going word by word. Let's take "relatively" – synonyms could be "somewhat", "fairly", "reasonably". Then "new" – "recent", "fresh", "novel". "Platform" might be "website", "site", "portal".