The meaning of the background has generated much speculation.

Still, a face-to-face meeting between the chief executives of two large phone companies is bound to generate speculation about what they discussed.

Why such works would be buried continues to generate much speculation.

This phenomenon is not understood, but has it generated much speculation.

But the topic has generated rampant speculation in political circles.

The reunion generated speculation on the status of their relationship.

All of these events generated worried speculation as to what exactly happened and why people were sick.

The article generated significant speculation about a likely Huntsman 2012 presidential bid.

Books have generated speculation about a presidential race in the past.

Such meetings - held once every five years - often generate speculation about a prelate's future.