async function doesTokenIdExist(tokenId, contract, walletAddress) {


  await contract.methods.ownerOf(tokenId).call(function(err,res){
        if(!err){

            console.log("Owner of token with tokenId " + tokenId + " is: " + res);
            console.log("Current wallet address is " + walletAddress);

            console.log("JSON.stringify(res): " + JSON.stringify(res));
            console.log("JSON.stringify(walletAddress): " + JSON.stringify(walletAddress));
            console.log("res.valueOf: " + res.valueOf());
            console.log("walletAddress.valueOf: " + walletAddress.valueOf());

            tokenAddress = res.valueOf();
            walletAddress = walletAddress.valueOf();

            console.log("Output of localeCompare: " + tokenAddress.localeCompare(walletAddress));

            if (tokenAddress.localeCompare(walletAddress) == 0){
                console.log("Wallet owner owns tokenId");
                setTokenExist();
            }

        } else {
            console.log(err);
        }
    });

}