Generate an informative caption for an image based on the given information(a,b,c): 
a. Image Resolution:  640X427 
b. Image Caption: a man taking a picture of a baseball player 
c. Dense Caption: {'a man wearing a red shirt: [225, 18, 358, 256];  man wearing a gray shirt: [0, 50, 157, 255];  a man wearing a blue shirt: [156, 69, 251, 255];  three men standing on the grass: [3, 15, 372, 253];  white hat with blue stripe: [12, 50, 83, 120];  white pants with red stripes: [261, 158, 343, 255];  a red baseball jersey: [247, 56, 334, 169]'} 

Please follow these rules while generating the image caption: 
        Describe objects with color and position. 
        Describe the relative position of each object. Use nouns rather than coordinates to show position information of each object. 
        Do not use more than 5 sentences. 
        Do not include any numbers in the caption, including the image resolution. 
        Directly provide the image caption. 