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: L - DOPA - induced dyskinesia ( LID ) is among the motor complications that arise in Parkinson ' s disease ( PD ) patients after a prolonged treatment with L - DOPA .
### Output Text:
<span class="chemical">L - DOPA</span> - induced dyskinesia ( LID ) is among the motor complications that arise in Parkinson ' s disease ( PD ) patients after a prolonged treatment with <span class="chemical">L - DOPA</span> . 