Question: What is the seating capacity of the stadium that hosed the 12th edition of the UEFA Women's Championship?

Context articles: UEFA Women's Euro 2017
2018 UEFA Women's Under-19 Championship
2018 UEFA Women's Under-17 Championship
2017 UEFA Women's Under-17 Championship
2020 UEFA Women's Under-17 Championship
2020 UEFA Women's Under-19 Championship
2019 UEFA Women's Under-19 Championship
2019 UEFA Women's Under-17 Championship
De Grolsch Veste
2017 UEFA Women's Under-19 Championship

The 2017 UEFA Women's Championship, commonly referred to as UEFA Women's Euro 2017, was the 12th edition of the UEFA Women's Championship, the quadrennial international football championship organised by UEFA for the women's national teams of Europe.
 The competition was expanded to 16 teams (from 12 teams in the previous edition).
The 2018 UEFA Women's Under-19 Championship (also known as UEFA Women's Under-19 Euro 2018) will be the 17th edition of the UEFA Women's Under-19 Championship (21st edition if the Under-18 era is included), the annual international youth football championship organised by UEFA for the women's under-19 national teams of Europe.
 Switzerland, which were selected by UEFA on 26 January 2015, will host the tournament.
The 2018 UEFA Women's Under-17 Championship (also known as UEFA Women's Under-17 Euro 2018) will be the 11th edition of the UEFA Women's Under-17 Championship, the annual international youth football championship organised by UEFA for the women's under-17 national teams of Europe.
 Lithuania, which were selected by UEFA on 26 January 2015, will host the tournament.
The 2017 UEFA Women's Under-17 Championship (also known as UEFA Women's Under-17 Euro 2017) was the 10th edition of the UEFA Women's Under-17 Championship, the annual international youth football championship organised by UEFA for the women's under-17 national teams of Europe.
 The Czech Republic, which were selected by UEFA on 26 January 2015, hosted the tournament.
The 2020 UEFA Women's Under-17 Championship (also known as UEFA Women's Under-17 Euro 2020) will be the 13th edition of the UEFA Women's Under-17 Championship, the annual international youth football championship organised by UEFA for the women's under-17 national teams of Europe.
 Sweden, which were selected by UEFA on 9 December 2016, will host the tournament.
The 2020 UEFA Women's Under-19 Championship (also known as UEFA Women's Under-19 Euro 2020) will be the 19th edition of the UEFA Women's Under-19 Championship (23rd edition if the Under-18 era is included), the annual international youth football championship organised by UEFA for the women's under-19 national teams of Europe.
 Georgia, which were selected by UEFA on 9 December 2016, will host the tournament.
The 2019 UEFA Women's Under-19 Championship (also known as UEFA Women's Under-19 Euro 2019) will be the 18th edition of the UEFA Women's Under-19 Championship (22nd edition if the Under-18 era is included), the annual international youth football championship organised by UEFA for the women's under-19 national teams of Europe.
 Scotland, which were selected by UEFA on 9 December 2016, will host the tournament.
The 2019 UEFA Women's Under-17 Championship (also known as UEFA Women's Under-17 Euro 2019) will be the 12th edition of the UEFA Women's Under-17 Championship, the annual international youth football championship organised by UEFA for the women's under-17 national teams of Europe.
 Bulgaria, which were selected by UEFA on 9 December 2016, will host the tournament.
De Grolsch Veste (] , English: The Grolsch Fortress , previously known as "Arke Stadion" ] ) is the stadium of football club FC Twente.
 It is located in Enschede, Netherlands, at the Business & Science Park, near the University of Twente.
 The stadium has an all-seated capacity of 30,205 with a standard pitch heating system and has a promenade instead of fences around the stands.
 It hosted the final of the UEFA Women's Euro 2017.
The 2017 UEFA Women's Under-19 Championship (also known as UEFA Women's Under-19 Euro 2017) was the 16th edition of the UEFA Women's Under-19 Championship (20th edition if the Under-18 era is included), the annual international youth football championship organised by UEFA for the women's under-19 national teams of Europe.
 Northern Ireland was selected by UEFA on 26 January 2015 as the host country for the tournament.