Additionally, if in trials after extinction, Pavlov began pairing the bell and the food back together, the dog relearned the conditioned response much faster than it took to learn the response for 
(Pavlov; began; pairing the bell and the food back together) Context(Pavlov began,List([45, 57))):(Pavlov; began pairing back together; the bell and the food) (the dog; relearned much faster; the conditioned response)
Pavlov began,List([45, 57))
Pavlov Pavlov the dog
began began pairing back together relearned much faster
pairing the bell and the food back together
the bell and the food
the conditioned response