You will be presented with a citation segment from the section of a research paper. Classify the intent behind this citation by choosing from one of the following categories:

- Method: Cites the paper for its methodology or procedure.
- Background: Cites the paper to provide background information.
- Result: Cites the paper for its findings or results.

Your answer should be a single word from the following list of options: ["Method", "Background", "Result"]. Do not include any other text in your response.

Citation sentence:

Here we have to focus on the most related ones, which are categorized into unsupervised [18, 15, 14, 5, 10, 13] and supervised [11, 9, 17, 12, 16, 1, 2] approaches.
Background