Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Kelly booked a three week vacation to visit relatives.  The first day, she spent traveling.  The next 5 days she spent at her Grandparents' house.  The next day, she spent traveling.  Then, she spends the next 5 days at her brother's house.  Then she spent two days traveling to her sister's house, spent several days at her sister's house, and then spent two more days traveling home.  How many days did she spend at her sister's house?

### Response:
 Wiki tatu ni siku 3*7=<<3*7=21>>21.
Alisafiri siku moja kwenda nyumbani kwa babu na bibi yake, siku moja kwenda nyumbani kwa kaka yake, siku mbili kwenda nyumbani kwa dada yake, na siku mbili kurudi nyumbani kwa jumla ya siku 1+1+2+2=<<1+1+2+2=6>>6.
Alitumia siku 5 nyumbani kwa babu na bibi yake na siku 5 nyumbani kwa kaka yake, kwa jumla ya siku 5+5=<<5+5=10>>10.
Hivyo, kati ya siku 21 za likizo, idadi ya siku zilizobaki za kutumia nyumbani kwa dada yake ilikuwa 21-6-10=<<21-6-10=5>>5.