What We Are Verbally

we	are	what we say
Value	Process: identifying: intensive	Token Verbiage Sayer Process: verbal

Our identity encodes us by reference to what we say
and decodes what we say by reference to us.

What We Are Mentally

we	are	what we know/desire/feel/perceive
Value	Process: identifying: intensive	Token Phenomenon Senser Process: mental

Our identity encodes us by reference to what we know/desire/feel/perceive 

and decodes what we know/desire/feel/perceive by reference to us.

What We Are Possessively

we	are	what we own
Value	Process: identifying: intensive	Token Value Token Process: identifying: possessive

Our identity encodes us by reference to what we own
and decodes what we own by reference to us.

Predicated Theme Vs Postposed Subject

it	‘s	your good luck	that	nobody	noticed
Sub-	Finite	Complement	-ject
Identi…	Process	Identifier	…fied

Ambiguously:

(a) Predicated Theme (agnate to nobody noticed your good luck)

it	‘s	your good luck	that	nobody	noticed
Theme: predicated			Rheme

(b) Postposed Subject (agnate to the fact that nobody noticed is your good luck)

it	‘s	your good luck	that	nobody	noticed
Theme	Rheme		Afterthought

See Halliday & Matthiessen (2004: 97-8).