After replacing the faulty characters, the sentence comes out to be:

```
Antique marbles are a sought-after item for collectors and enthusiasts who specialize in the niche market of marble collecting.
```

This is the most probable outcome, but it is not the only one since every 'n' could potentially be an 's', given the scenario.
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence