What is meta_info.json for GPA gqa-inplant dataset not found

[YerongLi]

    |-- gqa-inpaint
    |   |-- images
    |   |-- images_inpainted
    |   |-- masks
    |   |-- train_scenes.json
    |   `-- meta_info.json
    `-- MagicBrush
        |-- data
        |-- processed-train
        `-- magic_train.json

• How to obtain meta_info.json file fromt the gqa-inplant dataset
• Also how to obtain the prepocessed-train for magicBrush?