{
"safari": {
    "os": ["Macintosh; Intel Mac OS X 10_15_7", "Macintosh; Intel Mac OS X 10_15_6", 
           "Macintosh; Intel Mac OS X 11_3", ""],
    "versions": ["14.1.1", "14.1", "14.0.3"]
    },

"firefox": {
    "os": ["Macintosh; Intel Mac OS X 10.15'", "Macintosh; Intel Mac OS X 10.14",
            "Windows NT 10.0; Win64; x64", "X11; Ubuntu; Linux x86_64",
            "X11; Linux x86_64", "Windows NT 10.0", "Macintosh; Intel Mac OS X 11.3"],
    "versions": ["88.0 ", "89.0", "90.0", "78.0"]
    }   
}