**YouTube** is an American [online video-sharing](https://en.wikipedia.org/wiki/Video_hosting_service "Video hosting service") [platform](https://en.wikipedia.org/wiki/Web_platform "Web platform") headquartered in [San Bruno, California](https://en.wikipedia.org/wiki/San_Bruno,_California "San Bruno, California")

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The Expert System package provides natural language understanding functionalities. 

It allows data extraction from various natural language sources including text and pdf files.

Package consists of 3 activities:

**Annotate Text** - Annotates a text input.

**Annotate File -** Annotates a file input.

**Annotate CogX -** Annotates a CogX input.

[Click here for documentation on the activities.](https://docs.uipath.com/integrations/docs/expert-system)

This is a beta version of the UiPath.ExpertSystem.Activities package, some features might be changed in the future.

The Expert System package provides natural language understanding functionalities.

Version	Release Date	Download Link
0.1.6942.34183	January 4, 2019
First release published on UiPath Go! Known issues: All the backquote ( ` ) symbols in the input text are replaced with apostrophes ( ' ) at runtime when returned in the FullResponse field. In some cases, some of the labels might not be extracted correctly. If this happens, please use the FullResponse field to extract the data.