1 files changed, 14 insertions, 0 deletions
diff --git a/include/serd/serd.h b/include/serd/serd.h
index 3be32a65..820af22c 100644
--- a/include/serd/serd.h
+++ b/include/serd/serd.h
@@ -827,6 +827,20 @@ serd_node_equals(const SerdNode* SERD_NULLABLE a,
 
 /**
    @}
+   @defgroup serd_statement Statement
+   @{
+*/
+
+/// Index of a node in a statement
+typedef enum {
+  SERD_SUBJECT   = 0, ///< Subject
+  SERD_PREDICATE = 1, ///< Predicate ("key")
+  SERD_OBJECT    = 2, ///< Object ("value")
+  SERD_GRAPH     = 3, ///< Graph ("context")
+} SerdField;
+
+/**
+   @}
    @defgroup serd_world World
    @{
 */