Roleset downgrade.01 Verbnet Class: NONE "replace":

Roles:

Arg0:replacer


Arg1:old thing


Arg2:new thing

Examples:

all args (-)
Edward M. Esber attributed the decline to reduced domestic revenue because of $4.9 million spent *trace* to downgrade existing software inventories to the new database IV Version 1.1.
Arg0:
REL:	downgrade
Arg1:	existing software inventories
Arg2-to:	the new database IV Version 1.1

Roleset downgrade.02 Verbnet Class: NONE "worsen":

Roles:

Arg0:causer of worsening, agent


Arg1:thing worsening


Arg2:amount, EXT


Arg3:start point


Arg4:end point

Examples:

transitive (-)
Recently it downgraded its plants so that it could make stain-resistant products with higher quality dyes.
ArgM-TMP:	Recently
Arg0:	it
REL:	downgraded
Arg1:	its plants
ArgM-PNC:	so that it could make stain-resistant products with higher quality dyes

The 'improve' sense is really the same as the 'replace' sense with the two objective arguments merged.