Martin (1992: 371-2):
Australia II is an Actor in [5:36kk] but a Car[r]ier in [5:36ll]; similarly the Americans are a Medium in [5:36y] but an Agent in [5:36dd]; and 'being ahead of' is variously realised as a Process [5:36kk], Attribute [5:36ll], Goal [5:36y] and Circumstance [5:36dd].
Blogger Comments:
Boats leading kk Australia II + leading x by a couple of = boat-lengths ll Australia II + leading[was ahead] x by 21 seconds y Americans + leading[increased lead] x to 46 seconds,at second = mark dd Liberty + leading x more & more[surged ahead] Fig. 5.36. Nuclear structures for ‘leading’ in text [5:36]
[1] Clause [kk] — like clause [ll] — construes an attributive relational Process. Viewed 'from above', it construes 'being–&–having', not 'doing–&–happening'. Viewed 'from roundabout', the unmarked present tense for lead in such a clause is the simple present leads, rather than the present–in–present is leading, which rules out the material Process analysis.
kk
Australia II
|
was leading
|
by the same margin
| |
Medium
|
Process
|
Range
|
Extent
|
Carrier
|
relational: intensive
|
Attribute: circumstantial
|
ll
she (Australia II)
|
was
|
21 seconds ahead
|
around the fifth mark
|
Medium
|
Process
|
Range
|
Location
|
Carrier
|
relational: intensive
|
Attribute: circumstantial
|
[2] In clause [y] the Americans serves as Agent, not Medium, and in clause [dd] Liberty serves as Medium, not Agent.
y
at the second mark
|
the Americans
|
had increased
|
their lead
|
to 46 seconds
|
Location
|
Agent
|
Process
|
Medium
|
Extent
|
Actor
|
material
|
Goal
|
dd
Liberty
|
surged
|
ahead
|
Medium
|
Process
|
Location: motion: away from
|
Actor
|
material
|
[3] In clause [kk] 'being ahead' is construed as Process and circumstantial Attribute, not just Process, and in clause [ll] also as Process and circumstantial Attribute, not just Attribute.
[4] The relation between Medium and Process is complementarity, not extension, for reasons previously given.
[5] The relation between Agent and Nucleus is enhancement, not extension, because the Agent is the external cause of the Process unfolding through the Medium.