Assertion: pastel | /r/HasProperty | conceived by jeffrey m. broughton
Facets:
value: because of dissatisfaction with the pl/1 language
type: CAUSE
Source sentences:
text: Pastel was conceived by Jeffrey M. Broughton, then Project Engineer in charge of compilers and operating system software for the S-1 project, because of dissatisfaction with the PL/1 language in which Amber was being implemented.