Conjugation example reproducability

[obsh]

Hi, I'm running fitbert in the Google Colab Notebook,
first time example with conjugation works but in each subsequent execution it substitutes masked with "looks" not "looking".

Notebook link: https://colab.research.google.com/drive/1o1pOO-ozEOHOKO5_j48_TbwgYyP1U7b8

[sam-writer]

hmmm... this seems to have to do with caching:

Notice how the second request is ~30x faster

[sam-writer]

I can't think where any caching would be happening though...