Predicated Theme: Encoding Identifying Clause

It	is	John	that	I	love
Theme	Rheme		Theme	Rheme
Theme			Rheme
		New	Given
Sub-	Finite	Complement	-ject
Val-	Process	Token/Identifier	-ue/Identified
Head/Thing			Postmodifier/Qualifier

For the textual and interpersonal analyses, see Halliday & Matthiessen (2004: 97, 157).

For the experiential analysis, the reasoning is as follows:

• for Token-Value structure, compare the agnate clause: John represents the one that I love where John functions as (the less abstract) Token (see Halliday & Matthiessen 2004: 231);
• for Identifier-Identified structure, consider the probe: Which represents the one that I love?; that is, the one that I love is identified by John, so John functions as the Identifier (see Halliday & Matthiessen 2004: 228).  Also, in the unmarked case, the Identifier conflates with the New information, as it does here (Halliday & Matthiessen 2004: 229).

The conflation of Token/Identifier and Value/Identified occurs in encoding identifying clauses.  In such clauses, the identity encodes the Value by reference to the Token, so in this clause, the identity encodes it…that I love by reference to John (see Halliday & Matthiessen (2004: 230).