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: Longitudinal association of alcohol use with HIV disease progression and psychological health of women with HIV .
### Output Text:
Longitudinal association of <span class="chemical">alcohol</span> use with HIV disease progression and psychological health of women with HIV . 