Represent the given dialogue about an image, which is used for image retrieval: Q:is rail empty
A:yes as far as i can see
Q:is rail metal
A:appears to be
Q:what color is train that is moving
A:hard to say, brown or silver
Q:can you see wheels
A:no
Q:can you see sky
A:yes
Q:can you see any grass
A:yes
Q:what color is sky
A:blue
Q:what color is grass
A:green
Q:are there any clouds in sky
A:yes
Q:can you see road
A:no, no road


['images/VisDial/Train/VisDial_image_9293.jpg', 'images/VisDial/Train/VisDial_image_98829.jpg', 'images/VisDial/Train/VisDial_image_21836.jpg', 'images/VisDial/Train/VisDial_image_81115.jpg', 'images/VisDial/Train/VisDial_image_112388.jpg', 'images/VisDial/Train/VisDial_image_21147.jpg', 'images/VisDial/Train/VisDial_image_120416.jpg', 'images/VisDial/Train/VisDial_image_121370.jpg', 'images/VisDial/Train/VisDial_image_11239.jpg', 'images/VisDial/Train/VisDial_image_96098.jpg', 'images/VisDial/Train/VisDial_image_8374.jpg', 'images/VisDial/Train/VisDial_image_117769.jpg']