Table:
0
A
B
C
D
E
1
Production no.
Episode no.
Original Airdate
Episode Title
Host
2
Pilot/1
101
March 2, 2007
"Istanbul"
Eric Geller
3
2
102
April 23, 2007
"Scotland's Sin City"
Eric Geller
4
3
103
April 30, 2007
" Hitler 's Underground Lair"
Eric Geller
5
4
104
May 7, 2007
"Rome's Hidden Empire"
Eric Geller
6
5
105
May 14, 2007
" Catacombs of Death"
Eric Geller
7
6
106
May 21, 2007
"City of Caves"
Eric Geller
8
7
107
June 4, 2007
"New York"
Eric Geller
9
8
108
June 11, 2007
"London's Lost Cities"
Eric Geller
10
9
109
June 18, 2007
"Beneath Vesuvius "
Don Wildman
11
10
110
June 25, 2007
" Freemason Underground"
Don Wildman
12
11
111
July 9, 2007
" Dracula 's Underground"
Don Wildman
13
12
112
July 16, 2007
"Secret Pagan Underground"
Don Wildman
14
13
113
July 23, 2007
"Underground Bootleggers"
Don Wildman
15
14
114
July 30, 2007
"Rome: The Rise"
Eric Geller

Questions and formulas:
Question: What host has an original air date of june 11, 2007?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="june 11, 2007"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E15,C2:C15="june 11, 2007"),5))
Level: medium