Well, one key element is the characters. You need to focus on who the main players are in the true story. Their personalities, motives, and relationships are important. Another element is the setting. Where did the story take place? The time period and location can greatly influence the story. Also, the plot is crucial. What events happened in the story? How did they unfold? These are the basic elements to consider when tagging based on a true story.
When tagging based on a true story, first think about the theme. Is it a story about love, survival, or something else? The theme can be a great starting point for tags. Then, look at the details. Details like specific objects or actions in the story can be used as tags. For instance, if the story is about a person climbing a mountain, tags like'mountain climbing', 'adventure', and the name of the mountain could be used. Also, consider the impact of the story. If it had a big impact on a community or society, tags related to that impact could be appropriate.