Table:
0
A
B
C
D
E
1
Season
Group A Winner
Group B Winner
Group C Winner
Group D Winner
2
1978–79
Sanremese
Cremapergo
Fano
Rende
3
1979–80
Prato
Modena
Giulianova
Cosenza
4
1980–81
Rhodense
Padova
Casertana
Campania
5
1981–82
Carrarese
Ancona
Siena
Barletta
6
1982–83
Prato
Legnano
Francavilla
Messina
7
1983–84
Livorno
Pavia
Jesi
Reggina
8
1984–85
Siena
VirescitBoccaleone
Brindisi
Licata
9
1985–86
Lucchese
Centese
Teramo
Nocerina
10
1986–87
Torres
Ospitaletto
Vis Pesaro
Frosinone
11
1987–88
Carrarese
Mantova
Perugia
Palermo
12
1988–89
Casale
Chievo
Fidelis Andria
Puteolana
13
1989–90
Siena
Varese
Fano
Battipagliese

Questions and formulas:
Question: What is the number of group b winner for francavilla?
Formula: ROWS(UNIQUE(FILTER(C1, D1="Francavilla")))
Formula2: ROWS(UNIQUE(FILTER(C2:C13, D2:D13="Francavilla")))
Level: medium
Question: What is the group a winner for modena?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="Modena"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E13,C2:C13="Modena"),2))
Level: medium
Question: What is the group a winner for vis pesaro?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="Vis Pesaro"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E13,D2:D13="Vis Pesaro"),2))
Level: medium
Question: What group a winner was for nocerina?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="Nocerina"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E13,E2:E13="Nocerina"),2))
Level: medium
Question: What was the group d winner for modena?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="Modena"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E13,C2:C13="Modena"),5))
Level: medium