input question: Answer this question: how long did the roman empire last????
output answer: The 500-year-old Roman Republic , which preceded it, had been destabilized through a series of civil wars .

input question: Answer this question: where is testosterone produced????
output answer: Testosterone is a steroid hormone from the androgen group and is found in mammals, reptiles, birds, and other vertebrates .

input question: Answer this question: what is mpeg4  avc or sp/asp????
output answer: H.264/MPEG-4 Part 10 or AVC (Advanced Video Coding) is a standard for video compression , and is currently one of the most commonly used formats for the recording, compression, and distribution of high definition video .

input question: Answer this question: what is an irregular heartbeat pvc????
output answer:
A premature ventricular contraction (PVC), also known as a premature ventricular complex, ventricular premature contraction (or complex or complexes) (VPC), ventricular premature beat (VPB), or ventricular extrasystole (VES), is a relatively common event where the heartbeat is initiated by Purkinje fibres in the ventricles rather than by the sinoatrial node , the normal heartbeat initiator.