Regarding Duolingo Japanese sentence being wrong

I'm learning Japanese from Duolingo right now and the sentence in Romaji is

"watashi no kasa wa akai desu"

Duolingo is accepting this as the answer

"わたしの かさ ***は*** あかい です"

But I find this wrong. Right after kasa there is "wa" but wa isn't like this.

Can someone please help me here.

by yash10019coder