How can i find whether a text is there in a list viewer or not?

MIT App Inventor Help
1

Suppose 4 people gives input:
I am 1.
I am 2
I am 3.
I am 4.
Now if I want to find whether 'I am 2' is there or not from the list viewer, then what will I do?

2

Use the is thing in list block

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