Table:
0
A
B
C
D
E
1
Block
Title
Directed by
Written by
Code
2
1
"Rose" "Aliens of London" "World War Three"
Keith Boak
Russell T Davies
1.1 1.4 1.5
3
2
"The End of the World" "The Unquiet Dead"
Euros Lyn
Russell T Davies Mark Gatiss
1.2 1.3
4
3
"Dalek" "Father's Day"
Joe Ahearne
Robert Shearman Paul Cornell
1.6 1.8
5
4
"The Long Game"
Brian Grant
Russell T Davies
1.7
6
5
"The Empty Child" "The Doctor Dances"
James Hawes
Steven Moffat
1.9 1.10
7
6
"Boom Town" "Bad Wolf" "The Parting of the Ways"
Joe Ahearne
Russell T Davies
1.11 1.12 1.13

Questions and formulas:
Question: Which Written by has a Code of 1.2 1.3?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="1.2 1.3"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,E2:E7="1.2 1.3"),4))
Level: medium