Table:
0
A
B
C
D
E
1
Year
Competition
Venue
Position
Notes
2
1999
World Race Walking Cup
Mézidon-Canon , France
55th
20km
3
2002
World Race Walking Cup
Turin, Italy
29th
50km
4
2002
Commonwealth Games
Manchester , England
2nd
20km
5
2003
World Championships
Paris, France
5th
20 km
6
2004
Olympic Games
Athens , Greece
16th
20 km
7
2004
World Race Walking Cup
Naumburg , Germany
14th
20km
8
2005
World Championships
Helsinki , Finland
10th
20 km
9
2006
Commonwealth Games
Melbourne , Australia
2nd
20km
10
2006
World Race Walking Cup
La Coruña , Spain
18th
20km
11
2007
World Championships
Osaka , Japan
7th
20 km
12
2008
Olympic Games
Beijing , PR China
6th
20 km
13
2009
World Championships
Berlin, Germany
18th
20 km
14
2009
World Championships
Berlin, Germany
6th
50 km
15
2010
World Race Walking Cup
Chihuahua, Mexico
DNF
50km
16
2010
Commonwealth Games
Delhi , India
2nd
20km
17
2012
Olympic Games
London , United Kingdom
27th
50 km

Questions and formulas:
Question: How many years have had the position of 2nd?
Formula: ROWS(UNIQUE(FILTER(A1, D1="2nd")))
Formula2: ROWS(UNIQUE(FILTER(A2:A17, D2:D17="2nd")))
Level: medium
Question: What position had notes of 20km and a year earlier than 2002?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(E1="20km")*(A1<2002)),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E17,(E2:E17="20km")*(A2:A17<2002)),4))
Level: medium
Question: What was the venue before 2006, with the position of 10th?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(A1<2006)*(D1="10th")),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E17,(A2:A17<2006)*(D2:D17="10th")),3))
Level: medium
Question: What were the notes when the Venue was Turin, Italy?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="turin, italy"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E17,C2:C17="turin, italy"),5))
Level: medium