Determine the topic of the passage. "Stephen John Hadley (born February 13, 1947) was the 21st U.S. Assistant to the President for National Security Affairs (commonly referred as National Security Advisor ), serving under President George W. Bush ." Topic:
Ans: Stephen Hadley

Determine the topic of the passage. "The original World Trade Center featured landmark twin towers, which opened on April 4, 1973 and were destroyed in the September 11 attacks of 2001, along with 7 World Trade Center." Topic:
Ans: World Trade Center

Determine the topic of the passage. "Humans are born with over 270 bones, some of which fuse together into a longitudinal axis, the axial skeleton , to which the appendicular skeleton is attached." Topic:
Ans: Human skeleton

Determine the topic of the passage. "Metformin ( BP , pronounced , ; originally sold as Glucophage) is an oral antidiabetic drug in the biguanide class." Topic:
Ans: Metformin