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: Transient neurologic symptoms after spinal anesthesia : a lower incidence with prilocaine and bupivacaine than with lidocaine .
### Output Text:
Transient neurologic symptoms after spinal anesthesia : a lower incidence with <span class="chemical">prilocaine</span> and <span class="chemical">bupivacaine</span> than with <span class="chemical">lidocaine</span> . 