Question:
I chopped down the tree with my axe because it was sharp.

Who is it referring to in this sentence?
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Answer:
my axe

Question:
Anna tucked Olivia into bed because she fell asleep on the couch.

Who is she referring to in this sentence?
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Answer:
Olivia

Question:
When Debbie splashed Tina, she got wet.

Who is she referring to in this sentence?
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Answer:
Tina

Question:
There is more NLP work on English than on Bengali because it has rich linguistic resources.

Who is it referring to in this sentence?
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Answer:
English