<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
I was wondering about the Boston Marathon. I don't understand how the bomber made a bomb out of a pressure cooker.
<|assistant|>
The pressure cooker used in the Boston Marathon bombing was a small, household kitchen appliance that uses steam and pressure to cook food more quickly. In this case, the cooked materials were packed with shrapnel and explosives, and then connected to a timed detonator and battery.