Dick Quax
Personal bests
Table:
Distance
Time
Place
Date

5000 m
13:12.87
Stockholm
1977

10000 m
27:41.95
London
1977[11]

Looking at the tabular data covering 'Dick Quax' titled 'Personal bests', summarise the highlighted cells in a single sentence and format it within the following JSON object {"answer": "YOUR ANSWER"}.