Give a try to this.
Assuming that in B2 starts the list of sentences. In Sheet 2!(i named it "Key Words) in A2:A66 exist the KEY words..
Then in C2 of your first sheet put this and copy down.
=LOOKUP(2^15,SEARCH('Key Words'!$A$2:$A$66,B2),'Key Words'!$A$2:$A$66)
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