| Name | SiO2 | PbO  | Others | S (cm2/g) |
| P9   | 77.6 | 8.9  | 13.5   | 460       |
| P19  | 70.3 | 18.9 | 10.8   | 360       |
| P37  | 58.0 | 36.9 | 5.7    | 340       |

Caption: Composition (% molar oxide) and specific surface area of the lead-silicate powders

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": "77.6", "type": "Glass_Compound_Amount", "constituent": "SiO2", "unit": "mol", "material": "P9"}
{"value": "8.9", "type": "Glass_Compound_Amount", "constituent": "PbO", "unit": "mol", "material": "P9"}
{"value": "13.5", "type": "Glass_Compound_Amount", "constituent": "Others", "unit": "mol", "material": "P9"}
{"value": "460", "type": "Other"}
{"value": "70.3", "type": "Glass_Compound_Amount", "constituent": "SiO2", "unit": "mol", "material": "P19"}
{"value": "18.9", "type": "Glass_Compound_Amount", "constituent": "PbO", "unit": "mol", "material": "P19"}
{"value": "10.8", "type": "Glass_Compound_Amount", "constituent": "Others", "unit": "mol", "material": "P19"}
{"value": "360", "type": "Other"}
{"value": "58.0", "type": "Glass_Compound_Amount", "constituent": "SiO2", "unit": "mol", "material": "P37"}
{"value": "36.9", "type": "Glass_Compound_Amount", "constituent": "PbO", "unit": "mol", "material": "P37"}
{"value": "5.7", "type": "Glass_Compound_Amount", "constituent": "Others", "unit": "mol", "material": "P37"}
{"value": "340", "type": "Other"}