Propose Submit Requirements Talk and Demo

Change-Id: I2882f021446d785933f86c58db7ebebcc02e0f7a
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 |  8:00 PST / 17:00 CET | Welcome to the Virtual User Summit - KeyNote introduction    |
 |  8:10 PST / 17:10 CET | What's new in Gerrit v3.4/v3.5                               |
 |  8:40 PST / 17:40 CET | Session 1 - __available for proposals__ (may include 1 poll) |
-|  9:10 PST / 18:10 CET | Session 2 - __available for proposals__ (may include 1 poll) |
+|  9:10 PST / 18:10 CET | Submit Requirements: Waving goodbye to Prolog                |
 |  9:40 PST / 18:40 CET | Session 3 - __available for proposals__ (may include 1 poll) |
 | 10:10 PST / 19:10 CET | Lightning talk 1 - __available for proposals__               |
 | 10:20 PDT / 19:20 CET | Lightning talk 2 - __available for proposals__               |
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+# Submit Requirements: Waving goodbye to Prolog
+
+Over the last year, Google has worked on a new way to define what makes
+a change submittable. Gerrit offers great flexibility for that by
+allowing users to write Prolog code. Prolog, however, is complex
+to learn. The new system offers simpler configuration that is just
+as flexible.
+
+In this talk, I'll demo the new submit requirements and talk about
+how you can wave goodbye to Prolog, too.
+
+*[Patrick Hiesel, Google](../speakers.md#patrick-hiesel)*
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 ### Shane McIntosh - University of Waterloo {#smcintosh}
 
 Shane is an associate professor at the [University of Waterloo](https://cs.uwaterloo.ca/), where he directs the Software Repository Excavation and Build Engineering Labs ([the Software REBELs](https://rebels.cs.uwaterloo.ca/)). Previously, he was an assistant professor with McGill University, where he held the Canada Research Chair in Software Release Engineering. He received the PhD from Queen's University, for which he was awarded the Governor General's Academic Gold Medal. In his research, he uses empirical methods to study software build systems, release engineering, and software quality.
+
+### Patrick Hiesel - Google {#patrick-hiesel}
+
+Patrick joined Google and the Gerrit project in 2016 working primarily on the backend. Since then, he has worked on making Gerrit faster and more stable as well as different features including (most recently) Submit Requirements.
+
+He is a Gerrit maintainer and a member of the Engineering Steering Committee.