Amazon Polly でサポートされている SSML タグ
https://docs.aws.amazon.com/ja_jp/polly/latest/dg/supported-ssml.html
Click https://docs.aws.amazon.com/ja_jp/polly/latest/dg/supported-ssml.html link to open resource.
https://docs.aws.amazon.com/ja_jp/polly/latest/dg/supported-ssml.html