In Python, using regular expressions, we can find all matches and replace them.
Now, thinking about the example given: the original sentence has three sets of synonyms. For each set, I can randomly pick one of the three words. For instance, "rapid" might be changed to "quick" or "fast". The same goes for "ran", "sprinted", "hurried" and "field", "meadow", "plain". Exploited College Girls - Daisy 12-11-10 .wmv
Alternatively, maybe the user just wants the code to replace each block once, generating a single variant. For example, replacing each block with one option, resulting in one sentence. But the example shows three sentences, each with different options selected. In Python, using regular expressions, we can find
Wait, looking back at the user's message: the example input is "The fast animal ran across the field." and the output is three sentences, each with different options selected. But the user's instruction says "swap words in format opt2. all words with 3 synonyms. Don't touch proper nouns. Text only." So perhaps the task is to generate a single output sentence with all blocks replaced by their synonyms. However, the example shows three different variants. But the user may be using multiple lines to show possible outputs, but the actual required output is just one line. For instance, "rapid" might be changed to "quick" or "fast"
The code needs to find each occurrence of ... , extract the options, select one, and replace the block with that option.
Okay, let's see what the user is asking for here. They want me to swap words in the format opt3, where each word has three synonyms. Also, they mentioned not to touch proper nouns and to provide the text only.