L0 = <http://www.simantics.org/Layer0-1.1>
ISSUE = <http://www.simantics.org/Issue-1.2>

ISSUE.Sources.Relations <T ISSUE.Sources.ConstraintIssueSource
    L0.HasLabel "Relations"
    ISSUE.IssueSource.HasConstraint L0.Entity.RelationConstraint
ISSUE.Sources.Properties <T ISSUE.Sources.ConstraintIssueSource
    L0.HasLabel "Properties"
    ISSUE.IssueSource.HasConstraint L0.Entity.PropertyConstraint
ISSUE.Sources.Values <T ISSUE.Sources.ConstraintIssueSource
    L0.HasLabel "Values"
    ISSUE.IssueSource.HasConstraint L0.Entity.ValueConstraint
ISSUE.Sources.URIs <T ISSUE.Sources.ConstraintIssueSource
    L0.HasLabel "URIs"
    ISSUE.IssueSource.HasConstraint L0.Entity.URIConstraint
ISSUE.Sources.Clusters <T ISSUE.Sources.ConstraintIssueSource
    L0.HasLabel "Clusters"
    ISSUE.IssueSource.HasConstraint L0.Entity.ClusterConstraint