That's a statement "where the fire is". The example above is a question "where is the fire?".
Punctuation aside, where English uses word order to differentiate these, Gaelic uses special interrogative forms of words., e.g.:
- Càit a bheil? (v) far a bheil
- Cuin a tha? (v) nuair a tha
- Ciamar a tha? (v) mar a tha