user
Instruction
This is a table fact verification task. The goal of this task is to distinguish whether the given statement is entailed or refuted by the given table.


Table
Table Title: usage share of operating systems
Table Content:
| source | date | method | ios | android | blackberry | symbian / series 40 | bada | windows | other |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| comscore reports (us only) | may - 13 | subscribers , us | 39.20% | 52.40% | 4.80% | 0.40% | n / a | 3.00% | n / a |
| gartner | may - 13 | units sold | 18.2% | 74.4% | 3.0% | 0.6% | 0.7% | 2.9% | 0.3% |
| gartner | aug - 13 | units sold | 14.2% | 79.0% | 2.7% | 0.3% | 0.4% | 3.3% | 0.2% |
| international data corporation | may - 13 | units shipped | 17.3% | 75.0% | 2.9% | 0.6 | n / a | 3.2% | 0.0% |
| net market share | july - 13 | browsing | 58.26% | 25.28% | 3.23% | 2.23% | 0.05% | 1.15% | 0.19% |
| statcounter global stats | july - 13 | browsing | 24.80% | 38.34% | 3.66% | 20.76% | 4.64% | 1.52 | 2.66 |
| wikimedia | mar - 13 | browsing | 66.53% | 25.93% | 2.02% | 3.03% | 0.42% | 1.85% | 0.7% |


Statement
international data corporation show that blackberry have a percentage of 2.9% on may - 13


Answer Format
The final answer should be either "entailed" or "refuted" and use the following format:
```json
{
    "answer": "entailed" or "refuted"
}
```
rule
["entailed"]