Represent the given dialogue about an image, which is used for image retrieval: Q:what color is the train
A:black
Q:is it sunny
A:yes
Q:is the tracks straight or curved
A:straight
Q:is the mountain covered in trees
A:no
Q:is the mountain covered in snow
A:a little
Q:is there any rocks
A:no
Q:is it a passenger train
A:i don't think so
Q:does the train have windows
A:can only see the back from far away
Q:are there any people
A:no
Q:is there any grass
A:yes


['images/VisDial/Train/VisDial_image_39995.jpg', 'images/VisDial/Train/VisDial_image_10576.jpg', 'images/VisDial/Train/VisDial_image_40038.jpg', 'images/VisDial/Train/VisDial_image_20393.jpg', 'images/VisDial/Train/VisDial_image_20048.jpg', 'images/VisDial/Train/VisDial_image_61855.jpg', 'images/VisDial/Train/VisDial_image_62866.jpg', 'images/VisDial/Train/VisDial_image_110573.jpg', 'images/VisDial/Train/VisDial_image_95718.jpg', 'images/VisDial/Train/VisDial_image_78240.jpg', 'images/VisDial/Train/VisDial_image_63787.jpg', 'images/VisDial/Train/VisDial_image_52793.jpg']