Represent the given dialogue about an image, which is used for image retrieval: Q:is the factory large
A:yes
Q:is it stone
A:yes
Q:how many sets of tracks
A:1
Q:is the train large
A:yes
Q:is it long
A:yes
Q:is it black
A:it's black and white
Q:what color is the smoke
A:gray
Q:is it daytime
A:yes
Q:is it sunny
A:it
Q:is it a city area
A:yes


['images/VisDial/Train/VisDial_image_31361.jpg', 'images/VisDial/Train/VisDial_image_82711.jpg', 'images/VisDial/Train/VisDial_image_91233.jpg', 'images/VisDial/Train/VisDial_image_61441.jpg', 'images/VisDial/Train/VisDial_image_33278.jpg', 'images/VisDial/Train/VisDial_image_384.jpg', 'images/VisDial/Train/VisDial_image_58792.jpg', 'images/VisDial/Train/VisDial_image_12938.jpg', 'images/VisDial/Train/VisDial_image_110814.jpg', 'images/VisDial/Train/VisDial_image_56334.jpg', 'images/VisDial/Train/VisDial_image_70580.jpg', 'images/VisDial/Train/VisDial_image_71045.jpg']