First, I need to understand the task step by step. The user provides a sentence, and I have to go through each word, replace it with three options in curly braces, but keep proper nouns as they are. Wait, in the example, "Hello" is replaced, which isn't a proper noun. So properly, I should only change words that aren't proper nouns.
Given the ambiguity, perhaps the correct approach is to leave words capitalized only if they are proper nouns. But since there's no way to know that, perhaps the user expects to leave any word that is capitalized (other than the first word of the sentence) as a proper noun, and replace the rest. However, the example shows that the first word "Hello" is left as is, even though it's a common noun. Therefore, maybe the first word is left as is regardless. So perhaps the rule is: leave the first word as is (even if it's a common noun), and replace the rest unless they are proper nouns. But in the example, the first word was left as is, and the rest of the words were replaced except for "cat" which was replaced, which is not a proper noun. Www Zootube Com Dog Sex 365 Animal
But this is getting complicated. Since the user provided an example where "Hello" is left as is. Perhaps the user's instruction is to leave the first word alone if it's capitalized, but that's not correct. The first word is capitalized for sentence structure, but it's not a proper noun. However, in the example, the first word "Hello" is not replaced. Therefore, perhaps the user's assistant is supposed to leave any word capitalized as a proper noun, but in the example, "Hello" is left. But "Hello" is not a proper noun. Therefore, there's a contradiction. First, I need to understand the task step by step
Original example input:
But how to determine what's a proper noun? Since the user can't be expected to provide a list of proper nouns, perhaps the task is to leave any word that is capitalized as a proper noun and replace the rest. So if a word is capitalized (except for the first word of a sentence), it's considered a proper noun. But the first word of the sentence is capitalized by default, so it's not a proper noun. However, in the example, the first word "Hello" is left as is, not replaced. So according to that, even the first word is left as is. So perhaps the user's instruction is to leave the first word and any capitalized word as proper nouns, but in reality, the first word's capitalization is because of its position, not being a proper noun. This is tricky. So properly, I should only change words that
Wait, looking at the example:
Alternatively, maybe the user intended to not replace certain words. For instance, in the example, "Hello" is a greeting and not a common noun, so it's left. But "my cat" is replaced. So perhaps the user's example is not perfectly aligned, but the main rule is to replace every word except proper nouns with three alternatives.