Table:
0
A
B
C
D
E
F
1
Year
Competition
Venue
Position
Event
Notes
2
1994
European Championships
Helsinki, Finland
11th
10,000 m
28:17.24
3
1997
World Championships
Athens, Greece
—
Marathon
DNF
4
1998
European Championships
Budapest, Hungary
3rd
Marathon
2:12:53
5
1999
World Championships
Seville, Spain
2nd
Marathon
2:14:03
6
2000
Olympic Games
Sydney, Australia
—
Marathon
DNF

Questions and formulas:
Question: How many years have a position of 2nd?
Formula: ROWS(UNIQUE(FILTER(A1, D1="2nd")))
Formula2: ROWS(UNIQUE(FILTER(A2:A6, D2:D6="2nd")))
Level: medium
Question: Which event has a year of 2000?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1=2000),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,A2:A6=2000),5))
Level: medium
Question: What position has notes of 2:12:53?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,F1="2:12:53"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,F2:F6="2:12:53"),4))
Level: medium