(
(
it starts with "linux red hat" AND it does not contain "enterprise" AND
(
following text of last " " of it as version = "8.0" OR following text of last " " of it as version = "9.0"
)
)
OR
(
it starts with "linux fedora core" AND following text of last " " of it as version < "3"
)
)
of
(
name of operating system as lowercase
)
((it starts with "linux red hat" AND it does not contain "enterprise" AND (following text of last " " of it as version = "8.0" OR following text of last " " of it as version = "9.0")) OR (it starts with "linux fedora core" AND following text of last " " of it as version < "3")) of (name of operating system as lowercase)
