diff --git a/json.html.markdown b/json.html.markdown
index 0e1a7d24..9041eaa2 100644
--- a/json.html.markdown
+++ b/json.html.markdown
@@ -3,6 +3,7 @@ language: json
 filename: learnjson.json
 contributors:
   - ["Anna Harren", "https://github.com/iirelu"]
+  - ["Marco Scannadinari", "https://github.com/marcoms"]
 ---
 
 As JSON is an extremely simple data-interchange format, this is most likely going
@@ -14,6 +15,9 @@ going to be 100% valid JSON. Luckily, it kind of speaks for itself.
 
 ```json
 {
+  "key": "value",
+  
+  "keys": "must always be enclosed in quotes (either double or single)",
   "numbers": 0,
   "strings": "Hellø, wørld. All unicode is allowed, along with \"escaping\".",
   "has bools?": true,
@@ -42,6 +46,12 @@ going to be 100% valid JSON. Luckily, it kind of speaks for itself.
       [0, 0, 0, 1]
     ]
   ],
+  
+  "alternative style": {
+    "comment": "check this out!"
+  , "comma position": "doesn't matter - as long as its before the value, then its valid"
+  , "another comment": "how nice"
+  },
 
   "that was short": "And, you're done. You now know everything JSON has to offer."
 }
diff --git a/python3.html.markdown b/python3.html.markdown
index 77811535..778076f8 100644
--- a/python3.html.markdown
+++ b/python3.html.markdown
@@ -238,7 +238,10 @@ empty_set = set()
 # Initialize a set with a bunch of values. Yeah, it looks a bit like a dict. Sorry.
 some_set = {1, 1, 2, 2, 3, 4}   # some_set is now {1, 2, 3, 4}
 
-# Add more items to a set
+#Can set new variables to a set
+filled_set = some_set
+
+# Add one more item to the set 
 filled_set.add(5)   # filled_set is now {1, 2, 3, 4, 5}
 
 # Do set intersection with &
diff --git a/zh-cn/json-cn.html.markdown b/zh-cn/json-cn.html.markdown
index 75966595..3a8db2cf 100644
--- a/zh-cn/json-cn.html.markdown
+++ b/zh-cn/json-cn.html.markdown
@@ -46,6 +46,6 @@ lang: zh-cn
     ]
   ],
 
-  "that was short": "And, you're done. You know know everything JSON has to offer."
+  "that was short": "And, you're done. You now know everything JSON has to offer."
 }
 ```