| Sample | SiO2 (wt%) | Na2CO3 (wt%) | Ag2O (wt%) |
| M3     | 65.63      | 31.25        | 3.12       |
| M4     | 64.95      | 30.93        | 4.12       |
| M5     | 64.28      | 30.61        | 5.11       |
| M6     | 63.64      | 30.30        | 6.06       |

Caption: Content of the oxides in the mixtures used to form the set of glasses in weight percentage

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": "65.63", "type": "Glass_Compound_Amount", "constituent": "SiO2", "unit": "wt", "material": "M3"}
{"value": "31.25", "type": "Glass_Compound_Amount", "constituent": "Na2CO3", "unit": "wt", "material": "M3"}
{"value": "3.12", "type": "Glass_Compound_Amount", "constituent": "Ag2O", "unit": "wt", "material": "M3"}
{"value": "64.95", "type": "Glass_Compound_Amount", "constituent": "SiO2", "unit": "wt", "material": "M4"}
{"value": "30.93", "type": "Glass_Compound_Amount", "constituent": "Na2CO3", "unit": "wt", "material": "M4"}
{"value": "4.12", "type": "Glass_Compound_Amount", "constituent": "Ag2O", "unit": "wt", "material": "M4"}
{"value": "64.28", "type": "Glass_Compound_Amount", "constituent": "SiO2", "unit": "wt", "material": "M5"}
{"value": "30.61", "type": "Glass_Compound_Amount", "constituent": "Na2CO3", "unit": "wt", "material": "M5"}
{"value": "5.11", "type": "Glass_Compound_Amount", "constituent": "Ag2O", "unit": "wt", "material": "M5"}
{"value": "63.64", "type": "Glass_Compound_Amount", "constituent": "SiO2", "unit": "wt", "material": "M6"}
{"value": "30.30", "type": "Glass_Compound_Amount", "constituent": "Na2CO3", "unit": "wt", "material": "M6"}
{"value": "6.06", "type": "Glass_Compound_Amount", "constituent": "Ag2O", "unit": "wt", "material": "M6"}