This is a correct answer to the following question about September 11 attacks. Yes or no? Answer: Many countries strengthened their anti-terrorism legislation and expanded law enforcement powers. Question: what is 9/11 bombings
No

This is a correct answer to the following question about SI base unit. Yes or no? Answer: The International System of Units (SI) defines seven units of measure as a basic set from which all other SI units are derived . Question: what is a base SI unit
No

This is a correct answer to the following question about Ocean. Yes or no? Answer: An ocean (; the World Ocean of classical antiquity ) is a body of saline water that composes a large part of a planet 's hydrosphere . Question: how much of earth is covered ocean water
No