Question:
Their belief was based on speculation that estrogen prevents cell damage and improves blood flow.

What is a sentence that would be (on a scale from 0 to 5) a 4 out of 5 in terms of textual similarity to the above sentence?

Answer:
Doctors have speculated that the body's own estrogen protects against cell damage and improves blood flow.

Question:
Jesse Jackson Jr., Wife to Plead Guilty to Fraud

What is a sentence that would be (on a scale from 0 to 5) a 5 out of 5 in terms of textual similarity to the above sentence?

Answer:
Jesse Jackson Jr. and wife to plead guilty to fraud

Question:
Hispanics have officially overtaken African Americans as the largest minority group in the US, according to a report released by the US Census Bureau.

What is a sentence that would be (on a scale from 0 to 5) a 4 out of 5 in terms of textual similarity to the above sentence?

Answer:
Hispanics, the fastest growing ethnic group in the US, have overtaken blacks to become the largest minority in the US, according to newly released government figures.