That format looks like the property identification for the ServiceNow Data Flow connector. Is that the context being used?
If so, then Global/Reserved Properties are referred to by the middle item ( ‘item 1’ )of their Property ID. Here’s a Session Relevance query you can use to retrieve the Property ID in the format used by the Data Flow. If this is for some other/custom integration, I think you’d have to ask your developer how to reference Global/Reserved Properties.
Example: Retrieve definitions and results for property named “OS”
((if exists source analysis of it then (name of site of source analysis of it & "-" & name of source analysis of it & "-" & item 2 of id of it as string) else (item 1 of id of it as string)) of it, name of it, id of it, name of site of source analysis of it | "none", name of source analysis of it | "none", (it, multiplicity of it) of unique values of values of results of it) of bes properties whose (name of it = "OS")
Sample results:
BigFix ServiceNow Data Flow-Hardware Attributes-9, OS, ( 15545, 1000, 9 ), BigFix ServiceNow Data Flow, Hardware Attributes, ( Win2008R2, 1 )
BigFix ServiceNow Data Flow-Hardware Attributes-9, OS, ( 15545, 1000, 9 ), BigFix ServiceNow Data Flow, Hardware Attributes, ( Win2012R2, 1 )
BigFix ServiceNow Data Flow-Hardware Attributes-9, OS, ( 15545, 1000, 9 ), BigFix ServiceNow Data Flow, Hardware Attributes, ( Win2016, 9 )
5, OS, ( 2299732975, 5, 1 ), none, none, ( CentOS 4/5 or later (64-bit), 2 )
5, OS, ( 2299732975, 5, 1 ), none, none, ( Linux CentOS 6.10 (2.6.32-754.25.1.el6.x86_64), 1 )
5, OS, ( 2299732975, 5, 1 ), none, none, ( Linux CentOS 7.7.1908 (3.10.0-1062.9.1.el7.x86_64), 1 )
Here we can see there are two different properties, with three results on each. The first is defined in site “BigFix ServiceNow Data Flow”, in the Analysis “Hardware Attributes”, and it is property 9. The second, which has no Source Analysis and no Source Site, is the Reserved property for “OS”. We can reference this in the ServiceNow Data Flow as
<property displayname="Operating System" columnname="5" datatype="string" />