From 5299404f6269b69beab2804f3444e41199dbebc8 Mon Sep 17 00:00:00 2001
From: Dave Longley <dlongley@digitalbazaar.com>
Date: Sat, 30 Jun 2012 21:36:03 -0400
Subject: [PATCH] Fix list term check.

---
 jsonld.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/jsonld.php b/jsonld.php
index 024e138..8cf3019 100644
--- a/jsonld.php
+++ b/jsonld.php
@@ -3029,7 +3029,8 @@ class JsonLdProcessor {
         continue;
       }
       // skip @list containers for non-@lists
-      if(!$is_list && $has_container && $entry->{'@container'} === '@list') {
+      if(!$is_list && $has_container && $entry->{'@container'} === '@list' &&
+        $value !== null) {
         continue;
       }
       // for @lists, if list_container is set, skip non-list containers