anserini-bm25 — Retrieval Task

Please describe in details how this run was generated: We used the ir-datasets integration that we prepared to index the corpus to Anserini and did BM25 retrieval with default values.
Specify datasets used in this run.: ['Other']
(if you checked "other", describe here): None.
Are you 100% confident that no data from https://github.com/microsoft/Tip-of-the-Tongue-Known-Item-Retrieval-Dataset-for-Movie-Identification or iRememberThisMovie.com (besides the training data provided as part of this year's track) was used for producing this run (including any data used for pretraining models that you are building on top of)?: Yes I am confident that no data from those sources except the official track training data was used to produce this run
Did you use any of the official baseline runs in any way to produce this run?: yes
If you did use any of the official baseline runs in any way to produce this run, please describe how below in sufficient detail (e.g., as reranking candidates or in ensemble with other approaches).: This is one of the baselines.