Roleset underpin.01 Verbnet Class: 1 "support":

Roles:

Arg0:supporter


Arg1:person or project being supported

Examples:

person: ns tense: ns aspect: ns voice: ns form: infinitive


active (-)
The share buy-back plan is likely *trace* to underpin B.A.T's share price.
Arg0:	*trace* -> The share buy-back plan
REL:	underpin
Arg1:	B.A.T 's share price

person: ns tense: present aspect: ns voice: passive form: participle


passive (-)
London share prices closed modestly higher largely on technical factors, although the market was underpinned *trace* near the end of the session by Wall Street's firmer trend.
REL:	underpinned
Arg1:	*trace* -> the market
ArgM-TMP:	near the end of the session
Arg0-by:	Wall Street's firmer trend

This is weird usage.