Q: Is the question "What will happen when sodium is put in water ?" asking about an entity, an abbreviation, a description, a human, a location, or a numeric entity?
A: description

Q: Is the question "What is a leaky heart valve ?" asking about an entity, an abbreviation, a description, a human, a location, or a numeric entity?
A: description

Q: Is the question "What is a common anti-AIDS drug ?" asking about an entity, an abbreviation, a description, a human, a location, or a numeric entity?
A: entity

Q: Is the question "What European capital celebrated its 2 , 000th anniversary in 1951 ?" asking about an entity, an abbreviation, a description, a human, a location, or a numeric entity?
A:
location