Table:
0
A
B
C
D
E
1
Branding
Callsign
Frequency
Power (kW)
Location
2
Mom's Radio 97.9 Laoag
DWSN-FM
97.9MHz
5kW
Laoag
3
Mom's Radio 95.9 Naga
DZRB-FM
95.9MHz
10kW
Naga
4
Mom's Radio 90.3 Bacolod
DYCP-FM
90.3MHz
5kW
Bacolod
5
Mom's Radio 88.3 Cebu
DYAP-FM
88.3MHz
5kW
Cebu
6
Mom's Radio 101.5 Tacloban
DYJP-FM
101.5MHz
2.5kW
Tacloban
7
Mom's Radio 101.9 Zamboanga
DXJP-FM
101.9MHz
5kW
Zamboanga

Questions and formulas:
Question: How many locations have the call signs dxjp-fm? 
Formula: ROWS(UNIQUE(FILTER(E1, B1="DXJP-FM")))
Formula2: ROWS(UNIQUE(FILTER(E2:E7, B2:B7="DXJP-FM")))
Level: medium
Question: What is the call sign of the station with the frequency of 90.3mhz
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="90.3MHz"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,C2:C7="90.3MHz"),2))
Level: medium
Question: What is the call sign for the station that uses the branding, mom's radio 101.5 tacloban?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="Mom's Radio 101.5 Tacloban"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,A2:A7="Mom's Radio 101.5 Tacloban"),2))
Level: medium
Question: What is the branding for stations located in Cebu? 
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="Cebu"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,E2:E7="Cebu"),1))
Level: medium