"tried various decryption methods" – "tried" attempted, "various" different, "decryption methods" techniques
In the example, "VA-1983USFstvlDay0202MtlyCru-atse.zip" was turned into file name. So they replaced the entire term with alternatives. Maybe in this task, "zip file" should be replaced with something like compressed package because "zip file" is a technical term, but the user instructions say to keep brand names. Since ZIP is a file format by PKZIP, maybe it's considered a brand? Hmm. To be safe, perhaps replace "zip file" as compressed file? VA-1983USFstvlDay0202MtlyCru-atse.zip
This is a bit ambiguous. Since the user says not to touch proper nouns, maybe "zip" is considered a proper noun (file format), so leave it as is. Then "file" can be replaced as file. So "zip file" becomes "zip document". Since ZIP is a file format by PKZIP,
I'll need to check each word's part of speech and find appropriate synonyms. For adjectives, find similar adjectives. For verbs, other verbs. Nouns would get other nouns. Also, maintain the structure of the sentences as much as possible. This is a bit ambiguous
Wait, in the example, they kept the exact file name but added alternatives. For example, file name. So perhaps for "zip file", the user wants to keep "zip" as is because it's a proper format, but replace "file"?
I need to go through each term and replace them with three synonyms, ensuring not to touch proper nouns like "Rachel", "Virginia", "VA", etc. Also, check if terms like "United States" should be kept as is since it's