Next, you start to narrow down the questions. Is this something that a reference book could answer right away? Or is this a question for which the answer is not so black and white and would require you to consult a treatise to answer? Maybe this question could be answered with a news search.

–How to Find Out Anything,
Don MacLeod

Which word in the passage is a signal word commonly found in procedural texts?

“Next”
“reference”
“Maybe”
“search”