user
Instruction
Answer the question based on the provided table.


Table
Table Title: 'Standings after the race' regarding '1977 Old Dominion 500'
Table Content:
| Pos | Driver | Points | Differential |
| --- | --- | --- | --- |
| - | Cale Yarborough | 4155 | 0 |
| - | Richard Petty | 3936 | 219 |
| - | Benny Parsons | 3782 | 373 |
| - | Darrell Waltrip | 3727 | 428 |
| - | Buddy Baker | 3276 | 879 |
| - | Dick Brooks | 3088 | 1067 |
| 7 | James Hylton | 2876 | 1279 |
| 8 | Cecil Gordon | 2860 | 1295 |
| 9 | Richard Childress | 2855 | 1300 |
| - | Bobby Allison | 2873 | 1372 |


Question
By how many points was Cale Yarborough ahead of Richard Petty in the 1977 Old Dominion 500 standings?


Answer Format
The final answer should be a sentence and use the following format:
```json
{
    "answer": "your_generated_sentence_here"
}
```
rule
["Cale Yarborough was 219 points ahead of Richard Petty in the 1977 Old Dominion 500 standings."]