Write an inquisitive question about a specific text span in a given sentence such that the answer is not in the text.

Let me give you an example: Sentence: The Obama administration is developing additional screening protocols for airline passengers both overseas and in the United States to control infectious diseases such as Ebola, President Barack Obama said Monday .<sep>Span: Obama administration
The answer to this example can be: What was the duration of the Obama administration?
Here is why: It is an inquisitive question based on the specific span of the sentence.

OK. solve this:
Sentence: Ebola outbreaks in the past few decades have consistently “ burned out ” in relatively isolated and rural areas in Central Africa where ill patients did not come into contact with many individuals .<sep>Span: relatively
Answer:
What do they mean by 'relatively'?