Represent the given dialogue about an image, which is used for image retrieval: Q:what color is the train
A:can't tell, the photo is black and white
Q:how many cars does the train have
A:i can see 2 or 3
Q:is steam coming out of the engine
A:no
Q:is it a passenger train
A:yes
Q:are any people waiting to board
A:yes a group of people
Q:can you see the engineer who drives the train
A:no
Q:is the station made of wood
A:no
Q:it  made of metal
A:brick it looks like
Q:is there a sign on the station
A:not that i can see
Q:is there a number on the train
A:31874


['images/VisDial/Train/VisDial_image_17173.jpg', 'images/VisDial/Train/VisDial_image_15974.jpg', 'images/VisDial/Train/VisDial_image_82980.jpg', 'images/VisDial/Train/VisDial_image_37108.jpg', 'images/VisDial/Train/VisDial_image_13098.jpg', 'images/VisDial/Train/VisDial_image_7638.jpg', 'images/VisDial/Train/VisDial_image_2919.jpg', 'images/VisDial/Train/VisDial_image_59908.jpg', 'images/VisDial/Train/VisDial_image_76654.jpg', 'images/VisDial/Train/VisDial_image_115086.jpg', 'images/VisDial/Train/VisDial_image_8869.jpg', 'images/VisDial/Train/VisDial_image_51674.jpg']