Grammar Writer's Workbench is a graphical platform in Interlisp for linguistic and algorithmic research within the Lexical Functional Grammar theoretical framework. In this 1982 videotape its co-creator Ron Kaplan demonstrates using the system to parse and analyze English sentences.
https://archive.org/details/Xerox_Cognitive_Instructional_Systems_Ron_Kaplan_1982-12
The manual of the system:
We are working to make Grammar Writer's Workbench available again on Medley.