I was looking at a different page. Looking at this I am sure what it means is this:
The Discovery herein identified was provided April 4th to the defendant (figure of speech it means the attorneys share it with George)
This is referring to the Real Evidence they have such as:
Inmate Info, Interviews, subpoenas, inmate interviews, EMS reports, Transcripts, Jail Calls, Facebook information, Facebook URL, Angela's phone information, Bank Documents, Bank Statements, lots of Bank Information from various various Banks, Farm Credit, Merchants, Aerial Images, ATF Reports, Lab Reports, Ballistic Reports etc...
Lots of information from FWF's computer and laptop including Google Searches, Web Histories, Web Bookmarks, Rhode searches, PDF Documents, Screen Shots, Screen Captures, Identifiers, Word Documents, Files etc....
This is to Certify that a copy of the foregoing Document was e-mailed to the Defense Attorneys on April 28th
This means that on April 28th the Prosecution e-mailed the Discovery Document to the Defense - this is the same Document we are reading that lists the Evidence they have.
Discovery Document - is what we all see and just lists what Evidence they have.
Discovery Evidence - is the actual Real Evidence they have.