| Peak position (cm-1) | Polarization | Assignment                |
| 63                   | HV, VV       | Boson peak                |
| 250                  | VV           | ZnO4 bending [8]          |
| 690                  | HV, VV       | Metaborate groups [4]     |
| 770                  | HV, VV       | Uncertain [4, 7]          |
| 800                  | HV, VV       | Boroxol rings [4, 7]      |
| 840                  | VV           | Pyroborate groups [4, 7]  |
| 950                  | VV           | Orthoborate groups [4, 7] |
| 1280                 | VV           | Pyroborate groups [5]     |
| 1400                 | HV, VV       | B-O- stretching [4, 6]    |

Caption: Frequencies, polarization and nature of the main Raman bands of the zinc borate 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": "63", "type": "Other"}
{"value": "250", "type": "Other"}
{"value": "690", "type": "Other"}
{"value": "770", "type": "Other"}
{"value": "800", "type": "Other"}
{"value": "840", "type": "Other"}
{"value": "950", "type": "Other"}
{"value": "1280", "type": "Other"}
{"value": "1400", "type": "Other"}