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Instruction
Answer the question based on the provided table.


Table
Table Title: 'Certifications' regarding 'Vogue (Madonna song)'
Table Content:
| Region | Certification | Certified units/Sales |
| --- | --- | --- |
| Australia (ARIA) | 2× Platinum | 140,000^ |
| Canada (Music Canada) | Platinum | 10,000^ |
| France (SNEP) | Silver | 220,000 |
| Japan (Oricon Charts) | — | 52,370 |
| New Zealand (RMNZ) | Gold | 5,000* |
| United Kingdom (BPI) | Gold | 663,000 |
| United States (RIAA) | 2× Platinum | 2,000,000^ |
| Digital | Digital | Digital |
| Brazil (Pro-Música Brasil) | Gold | 100,000* |
| United States | — | 311,000 |
| *sales figures based on certification alone ^shipments figures based on certification alone | *sales figures based on certification alone ^shipments figures based on certification alone | *sales figures based on certification alone ^shipments figures based on certification alone |


Question
Where has "Vogue" sold the most digital units, and how many has it sold there?


Answer Format
The final answer should be a sentence and use the following format:
```json
{
    "answer": "your_generated_sentence_here"
}
```
rule
["\"Vogue\" has sold 311,000 digital certified units in the United States."]