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: It was suggested that this new method and the results are consistent with contralateral motor control that may be important in determining the dominant cerebral hemisphere in animals .
### Output Text:
It was suggested that this new method and the results are consistent with contralateral motor control that may be important in determining the dominant cerebral hemisphere in animals . 