Represent the given dialogue about an image, which is used for image retrieval: Q:how many airplanes can you see
A:4
Q:what is the color of the sky
A:grayish
Q:what are the color of the airplanes
A:red and white
Q:can you see any birds
A:no
Q:is this a professional photo
A:i don't think so
Q:can you see any pilots
A:no
Q:can you see each engine
A:no
Q:can you see the sun
A:no
Q:is this a professional photo
A:i don't know
Q:is this a military plane
A:they could be


['images/VisDial/Train/VisDial_image_21597.jpg', 'images/VisDial/Train/VisDial_image_32574.jpg', 'images/VisDial/Train/VisDial_image_106568.jpg', 'images/VisDial/Train/VisDial_image_23687.jpg', 'images/VisDial/Train/VisDial_image_69466.jpg', 'images/VisDial/Train/VisDial_image_103164.jpg', 'images/VisDial/Train/VisDial_image_8154.jpg', 'images/VisDial/Train/VisDial_image_21302.jpg', 'images/VisDial/Train/VisDial_image_48557.jpg', 'images/VisDial/Train/VisDial_image_96728.jpg', 'images/VisDial/Train/VisDial_image_13662.jpg', 'images/VisDial/Train/VisDial_image_81905.jpg']