Groupama Arena
Concerts
Table:
List of concerts

Year
Date
Main act(s)
Opening act(s)
Tour / Concert name
Tickets
sold

2017

22 May

Depeche Mode

—

Global Spirit Tour

25,200

23 August

Robbie Williams

The Heavy Entertainment Show Tour

Examining the table that covers 'Groupama Arena' (see 'Concerts'), create one factual sentence about the highlighted cells, without adding extra data and format it within the following JSON object {"answer": "YOUR ANSWER"}.