Novinhas De 12 A 15 Anos Nuas Fotos -
Proper nouns here: "The" is a definite article, not a proper noun. "Fox" is a common noun. Let's process each word.
For "quick": synonyms could be swift, fast, rapid. So swift "brown": coffee "fox": vixen (assuming "animal" is acceptable) "jumps": hops "over": across "the": an (but "the" is a definite article, maybe not a proper noun) "lazy": laid-back "dog": canine Novinhas de 12 a 15 anos nuas fotos
"all words with 3 synonyms in spintax: x. Skip proper nouns. Output text only. Proper nouns here: "The" is a definite article,
Wait, but "The" in the original text is capitalized. The user might want to preserve capitalization, but the instruction is to skip proper nouns, not to keep cases. So perhaps the output should be lowercase except for proper nouns. But in this example, "The" is an article, not a proper noun. So the example output would have each word in spintax with three synonyms, all lowercase. For "quick": synonyms could be swift, fast, rapid