Swimming at the 2017 World Aquatics Championships – Women's 100 metre freestyle
Records
Table:
Date
Event
Name
Nationality
Time
Record

23 July
Women's 4×100 m freestyle relay final
Sarah Sjöström
Sweden
51.71
WR, CR

Using the table information on 'Swimming at the 2017 World Aquatics Championships – Women's 100 metre freestyle' in the 'Records' section, write a one-sentence description of the highlighted cells and return it as JSON: {"answer": "YOUR ANSWER"}.