Ineed an example of a signal phrase in a sentence and how to use one properly

Signal phrases are short phrases that introduce a quote, paraphrase, ... There are three important reasons to use signal phrases: ... material must be cited, and signal phrases are one way to cite a source—however, ... Signal phrases usually come at the beginning of a sentence

Explanation:

According to John Doe, "John Doe is a name that people use as examples or in hospitals if the person is unkown."

Explanation:

A signal phrase is used as a phrase showing that this information is not yours.

Examples:

argue, assert, claim, comment, confirm, contend, declare, deny, emphasize, illustrate, imply, insist, note, observe, point out, report, respond, say, suggest, think, and write.

You can use all of these before a credit quote in a article or anything you are writing.

Hope this helps xx

i know its the art of writing?