Table:
text: 2010–11 UEFA Europa League
Knockout phase
Round of 16
Team_1 Agg_ Team_2 _1st_leg _2nd_leg_
Benfica 3–2 Paris Saint-Germain 2–1 1–1
Dynamo Kyiv 2–1 Manchester City 2–0 0–1
Twente 3–2 Zenit Saint Petersburg 3–0 0–2
CSKA Moscow 1–3 Porto 0–1 1–2
PSV Eindhoven 1–0 Rangers 0–0 1–0
Bayer Leverkusen 3–5 Villarreal 2–3 1–2
Ajax 0–4 Spartak Moscow 0–1 0–3
Braga 1–08 Liverpool 1–0 0–0

Question: What is the total number of nations in Team 1 for the 2010–11 UEFA Europa League?