keiko | Enable Kubernetes at scale | Continuous Deployment library

I am trying to make a program that takes in the Name, Sex, Age and/or Country of a Person and outputs the correct Name from the Registry, when queried with any of the mentioned traits. If such a Person does not exist, then the output is "Unknown". 

For example,

Testcase # 1:

Input:

• Name=Rob Sex=Man Age=42 Country=US
• Name=Robin Sex=Man Age=62 Country=US
• Name=Magda Sex=Woman Age=29 Country=PL
• Name=Peter Sex=Man Age=66 Country=RU
• Name=Pete Sex=Man Age=6 Country=US
• Name=Xiaoling Sex=Woman Age=26 Country=CH

Output:

• Required output criteria: Age=6 Country=US

Therefore, the program should return a Person of Age=6 and Country=US, which is "Pete". However, my code is returning "Unknown".

Testcase # 2:

Input:

• Name=John Sex=Man Age=46 Country=UK

• Name=Anita Sex=Woman Age=22 Country=NL

• Name=Keiko Sex=Woman Age=37 Country=JP

• Name=Denny Sex=Man Age=13 Country=NL

• Name=Mirjam Sex=Woman Age=28 Country=BE

• Name=Johnny Sex=Man Age=8 Country=UK

• Name=Anna Sex=Woman Age=71 Country=SW

• Name=Fred Sex=Man Age=51 Country=NL

• Name=Frederique Sex=Woman Age=51 Country=FR

• Name=Rob Sex=Man Age=42 Country=US

• Name=Robin Sex=Man Age=46 Country=US

• Name=Magda Sex=Woman Age=29 Country=PL

• Name=Peter Sex=Man Age=66 Country=RU

• Name=Pete Sex=Man Age=66 Country=US

• Name=Frederique Sex=Woman Age=51 Country=FR

• Name=Xiaoling Sex=Woman Age=26 Country=CH

Output:

• Required output criteria: Name=Xiaoling

Therefore, the program should return a Person of Name=Xiaoling, which is "Xialong. However, my code is returning "Unknown".

My code: