| Assignment                                     | Observed (cm-1) | Ref. values (cm-1)  |
| Mn2+-O stretching                              | 250             | 240-290 [2,3,19]    |
| Mn3+-O stretching                              | -               | 370-400 [3]         |
| Si-O-Si rocking motion of the bridging oxygen  | 460             | 460 [20,21]         |
| ring bending of [B3O9]3-                       | 525             | 525 [2]             |
| B-O-B bending between two trigonal boron atoms | 690             | 690-730 [3,22,23]   |
| Si-O-Si bending motion of the bridging oxygen  | 805             | 785-810 [20,21]     |
| B-O stretching in tetrahedron [BO4]-           | 930             | 900-1000 [2,22,23]  |
| Si-O-Si asymmetric stretching                  | 1080            | 1075-1120 [21]      |
| Si-O-B asymmetric stretching                   | -               | 1150 [24,25]        |
| B-O stretching in [BO2O-] n  chains            | 1230            | 1220-1270 [22,23]   |
| B-O- stretching of [BO2O-] n  chains           | 1390            | 1350-1400 [2,22,23] |

Caption: Assignations of IR bands for the obtained samples.

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": "250", "type": "Other"}
{"value": "240", "type": "Other"}
{"value": "290", "type": "Other"}
{"value": "370", "type": "Other"}
{"value": "400", "type": "Other"}
{"value": "460", "type": "Other"}
{"value": "460", "type": "Other"}
{"value": "525", "type": "Other"}
{"value": "525", "type": "Other"}
{"value": "690", "type": "Other"}
{"value": "690", "type": "Other"}
{"value": "730", "type": "Other"}
{"value": "805", "type": "Other"}
{"value": "785", "type": "Other"}
{"value": "810", "type": "Other"}
{"value": "930", "type": "Other"}
{"value": "900", "type": "Other"}
{"value": "1000", "type": "Other"}
{"value": "1080", "type": "Other"}
{"value": "1075", "type": "Other"}
{"value": "1120", "type": "Other"}
{"value": "1150", "type": "Other"}
{"value": "1230", "type": "Other"}
{"value": "1220", "type": "Other"}
{"value": "1270", "type": "Other"}
{"value": "1390", "type": "Other"}
{"value": "1350", "type": "Other"}
{"value": "1400", "type": "Other"}