added use case nb to the examples

[adgianv]

Description

adds a use case example to sieves running a pipeline on the CrisisNLP dataset

[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #189   +/-   ##
=======================================
  Coverage   93.26%   93.26%           
=======================================
  Files          77       77           
  Lines        3918     3918           
=======================================
  Hits         3654     3654           
  Misses        264      264           

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