user: Extract the ways to spell "Muscovy duck" using the sample as a reference, and place them in a list.

assistant: - Muscovy duck
- Barbary duck
- Quackless duck

user: Given a reference text about Lee Kuan Yew, tell me when they were born, when they were president, and what their most famous accomplishment was in office.

assistant: Lee Kuan Yew was born on 16 September 1923. 
He served as the inaugural Prime Minister of Singapore from 1959 to 1990.
His most famous accomplishment in office was overseeing Singapore's transformation from an island nation with a high illiteracy rate and no natural resources into a developed country with a high-income economy within a single generation, commonly termed (from his autobiography) as 'From the third world to the first world.

user: How do cardiac pacemakers work?

assistant: Pacemakers or cardiac pacemakers usually refer to artificial cardiac pacemakers, since our body has a natural cardiac pacemaker. 

The artificial cardiac pacemakers work by detecting electric signals through the conductive leads that are attached to the inside of heart walls, usually in atriums, and, in the absence of an electrical signal, generate one to stimulate the desired heart area, either an atrium or a ventricle.