In the sentence extracted from biomedical literature, identify all the chemical entities. The required answer format is the same sentence with HTML <span> tags to mark up specific entities. 
### Entity Markup Guides:
Use <span class="chemical"> to denote a chemical.

### Input Text: CONCLUSIONS : Cabergoline may be useful for the treatment of risperidone - induced hyperprolactinemia in youth ; however , further research is needed .
### Output Text:
CONCLUSIONS : <span class="chemical">Cabergoline</span> may be useful for the treatment of <span class="chemical">risperidone</span> - induced hyperprolactinemia in youth ; however , further research is needed . 