"Sister and Rehema are Tanzanian cooks."

Translation: Dada na Rehema ni wapishi Watanzania.

[Bree93799]

Ahh it feels good when im learning new stuff

[Tee119990]

Again, it’s so frustrating to use all the right words but not know the rules for sentence structure.

[MansaJames]

Really though!!

[KajiaMsuya]

Dada na Rehema ni wapishi wa Kitanzania.

[machieng]

'Ki-' is never used for someone's nationality

[Holley263100]

In the tips you find the example: "Wasichana wa Marekani".
So, when do I use:
"Dada na Rehema ni wapishi Watanzania." and when "Dada na Rehema ni wapishi wa Tanzania."?
Or is the second one false?

[Chansa582404]

This sentence is not correct in English or in swahili!!!