Add train

train/metadata.yaml

@@ -0,0 +1,3 @@
+{"file_name": "0.jpg","text": "a drawing of a green pokemon with red eyes"}
+{"file_name": "1.jpg","text": "a green and yellow toy with a red nose"}
+{"file_name": "2.jpg","text": "a red and white ball with an angry look on its face"}