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: OBJECTIVE : The aim of this study was to evaluate the efficacy and tolerability of a new fixed - dose combination ( FDC ) of telmisartan 40 mg + amlodipine 5 mg ( T + A ) compared with amlodipine 5 - mg monotherapy ( A ) in adult Indian patients with stage II hypertension .
### Output Text:
OBJECTIVE : The aim of this study was to evaluate the efficacy and tolerability of a new fixed - dose combination ( FDC ) of <span class="chemical">telmisartan</span> 40 mg + <span class="chemical">amlodipine</span> 5 mg ( T + A ) compared with <span class="chemical">amlodipine</span> 5 - mg monotherapy ( A ) in adult Indian patients with stage II hypertension . 