Sentence examples for are a matter of speculation from inspiring English sources
Their origins are a matter of speculation.
The costs and potential profits of the gas discoveries are a matter of speculation.
The causes of the fluctuating fortunes of Mercia and Wessex are a matter of speculation, but it may be that Carolingian support influenced both Egbert's ascendancy and the subsequent Mercian recovery.
The ligands for these putative binding sites, and any consequent differences in binding specificities of eEF1A1 versus eEF1A2, are a matter of speculation.
Underlying causes are a matter of speculation.
However, the specific types of change (i.e., local, regional, or global), the direction of change in a particular location (i.e., positive or negative), and the magnitude of change in air quality that may be attributable to climate change are a matter of speculation, based on extrapolating present understanding to future scenarios.
Why is a matter of speculation.
Their number is a matter of speculation, since polygamists are generally reluctant to identify themselves.
Exactly how much Mr. Obama will raise this year is a matter of speculation and dispute.
Whether he would have become a great president is a matter of speculation.
How onerous those safeguards may be is a matter of speculation.
