| k    | <r  k >             | a  k   |
| 2    | 1.846x10-21 m2      | 0.933  |
| 4    | 8.637x10-42 m4      | 3.487  |
| 6    | 8.318x10-62 m6      | 7.057  |
|      |                     |        |
| k, l | Ks(k,l)             | b(k,l) |
| 1, 2 | -2.759x10-4 m2 J-1  | 2.891  |
| 3, 2 | 1.253x10-24 m4 J-1  | 7.410  |
| 3, 4 | 1.458x10-24 m4 J-1  | 7.059  |
| 5, 4 | -7.122x10-45 m6 J-1 | 13.867 |
| 5, 6 | -2.015x10-44 m6 J-1 | 6.611  |
| 7, 6 | 7.444x10-65 m8 J-1  | 12.411 |

Caption: The parameters <r k > , a k , Ks(k,l) and b(k,l) for the 4f electrons [12]

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": "2", "type": "Other"}
{"value": "0.933", "type": "Other"}
{"value": "4", "type": "Other"}
{"value": "3.487", "type": "Other"}
{"value": "6", "type": "Other"}
{"value": "7.057", "type": "Other"}
{"value": "2.891", "type": "Other"}
{"value": "7.410", "type": "Other"}
{"value": "7.059", "type": "Other"}
{"value": "13.867", "type": "Other"}
{"value": "6.611", "type": "Other"}
{"value": "12.411", "type": "Other"}