I recommend the following system to identify and flag potential instances of plagiarism in text:

Use plagiarism detection software: There are many plagiarism detection software available such as Turnitin, Grammarly, Copyscape, etc. These tools can scan the submitted text and compare it with a vast database of online sources and academic papers to identify any potential instances of plagiarism.

Check for paraphrasing: Paraphrasing is a common tactic used by plagiarists to avoid detection. Therefore, it is essential to check the text for paraphrasing by comparing it with the original source text. This can be done manually or using tools such as QuillBot or Paraphrasing Tool.

Analyze sentence structure: Plagiarized texts often have the same sentence structure as the original source text. Therefore, it is crucial to analyze the sentence structure of the text to identify any potential instances of plagiarism.

Use Google search: A simple Google search can also help in identifying plagiarism. Simply copy a unique sentence or a phrase from the submitted text and paste it into Google search. If any matches are found, it indicates that the text may be plagiarized.

Check references and citations: If the submitted text contains references or citations, it is important to check the original sources to ensure that they are correctly cited. Incorrect or missing citations can also be an indication of plagiarism.

By implementing the above system, it is possible to identify and flag potential instances of plagiarism in text efficiently. Remember, plagiarism is unethical and can have severe consequences, so it is always better to be safe than sorry.
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence