| Glass composition (% mol) | SiO2 | CaO  | MgO  | Na2O | Li2O |
| G20CaII                   | 55.3 | 22.0 | 12.0 | 9.0  | 1.7  |

Caption: Chemical composition of G20CaII glass.

You are provided with a table from a material science paper. Here are JSON templates for two types of numeric cells: "Other" and "Glass_Compound_Amount":
{"value": "xx", "type": "Other"}
{"value": "xx", "type": "Glass_Compound_Amount", "constituent": "xx", "unit": "xx", "material": "xx"}

Please describe all numeric cells in the above table following the JSON templates (proceeding by row in a left-right, top-down direction). For each cell, output one JSON description per line. For any unanswerable attributes in the templates, set their value to the placeholder "xx".

Cell Description:
{"value": "55.3", "type": "Glass_Compound_Amount", "constituent": "SiO2", "unit": "mol", "material": "G20CaII"}
{"value": "22.0", "type": "Glass_Compound_Amount", "constituent": "CaO", "unit": "mol", "material": "G20CaII"}
{"value": "12.0", "type": "Glass_Compound_Amount", "constituent": "MgO", "unit": "mol", "material": "G20CaII"}
{"value": "9.0", "type": "Glass_Compound_Amount", "constituent": "Na2O", "unit": "mol", "material": "G20CaII"}
{"value": "1.7", "type": "Glass_Compound_Amount", "constituent": "Li2O", "unit": "mol", "material": "G20CaII"}