diff --git a/gg/decoder.go b/gg/decoder.go
index 6d41d80..e3acbcf 100644
--- a/gg/decoder.go
+++ b/gg/decoder.go
@@ -53,9 +53,7 @@ var (
 		Rune('-'),
 		positiveNumber,
 		func(neg Located[rune], posNum Located[string]) Located[string] {
-			return Located[string]{
-				neg.Location, string(neg.Value) + posNum.Value,
-			}
+			return Locate(neg.Location, string(neg.Value)+posNum.Value)
 		},
 	)
 
@@ -68,7 +66,7 @@ var (
 				panic(fmt.Errorf("parsing %q as int: %w", str, err))
 			}
 
-			return Located[Value]{str.Location, Number(i)}
+			return Locate(str.Location, Number(i))
 		},
 	)
 )
@@ -93,7 +91,7 @@ var (
 			for _, r := range tail {
 				name = append(name, r.Value)
 			}
-			return Located[Value]{head.Location, Name(string(name))}
+			return Locate(head.Location, Name(string(name)))
 		},
 	)
 )
@@ -228,7 +226,7 @@ var graphSym, value = func() (
 				gs.g = new(Graph)
 			}
 
-			return Located[Value]{r.Location, Value{Graph: gs.g}}
+			return Locate(r.Location, Value{Graph: gs.g})
 		},
 	)
 
diff --git a/gg/grammar/location.go b/gg/grammar/location.go
index 1c45171..9e0c64e 100644
--- a/gg/grammar/location.go
+++ b/gg/grammar/location.go
@@ -18,6 +18,11 @@ type Located[T any] struct {
 	Value T
 }
 
+// Locate returns a Located instance combining the given values.
+func Locate[T any](l Location, v T) Located[T] {
+	return Located[T]{l, v}
+}
+
 // LocatedError is an error related to a specific point within a stream of
 // runes.
 type LocatedError Located[error]