Information about Head of Government and Head of State can be expressed via multiple different routes:
Although this introduces some redundancy, it makes it significantly easier to query the data (particularly with direct access within Wikipedias), and the replication makes it easier to spot data that is inconsistent (and thus probably inaccurate or out of date).
< [[QScript error: No such module "IDs".|Lua error in Module:Wikidata at line 19: attempt to concatenate a nil value. (QScript error: No such module "IDs".)]]Template:ReasonatorTemplate:SQID >[[Property:PTemplate:Pid|Lua error in Module:Wikidata at line 19: attempt to concatenate a nil value. (PTemplate:Pid)]] Template:SQID< Q22 >
< [[QScript error: No such module "IDs".|Lua error in Module:Wikidata at line 19: attempt to concatenate a nil value. (QScript error: No such module "IDs".)]]Template:ReasonatorTemplate:SQID >[[Property:PTemplate:Pid|Lua error in Module:Wikidata at line 19: attempt to concatenate a nil value. (PTemplate:Pid)]] Template:SQID< Q145 >
< [[QScript error: No such module "IDs".|Lua error in Module:Wikidata at line 19: attempt to concatenate a nil value. (QScript error: No such module "IDs".)]]Template:ReasonatorTemplate:SQID >[[Property:PTemplate:Pid|Lua error in Module:Wikidata at line 19: attempt to concatenate a nil value. (PTemplate:Pid)]] Template:SQID< Q22 >
< [[QScript error: No such module "IDs".|Lua error in Module:Wikidata at line 19: attempt to concatenate a nil value. (QScript error: No such module "IDs".)]]Template:ReasonatorTemplate:SQID >[[Property:PTemplate:Pid|Lua error in Module:Wikidata at line 19: attempt to concatenate a nil value. (PTemplate:Pid)]] Template:SQID< Q467112 > Template:C/qualifier
It's usually enough to only include the current office-holder, but if including previous as well, each should have both a control group (P580) and decays to (P582) and the current head should be set to Preferred Rank (with the former as Normal Rank)
< [[QScript error: No such module "IDs".|Lua error in Module:Wikidata at line 19: attempt to concatenate a nil value. (QScript error: No such module "IDs".)]]Template:ReasonatorTemplate:SQID >[[Property:PTemplate:Pid|Lua error in Module:Wikidata at line 19: attempt to concatenate a nil value. (PTemplate:Pid)]] Template:SQID< Q4435674 >