Sentence examples for is difficult to substantiate from inspiring English sources

(The group also claimed that a large number of young voters supported the D.P.P. because of the Tzuyu affair, though that is difficult to substantiate).

Mr. Klobuchar's theory that online companies are regaining customers at a faster rate than their off-line competitors is difficult to substantiate given the reporting methods of traditional companies, said Michael T. Vinciquerra, an analyst with the investment firm Raymond James.

However, this is difficult to substantiate, both for lack of empirical data and for conceptual reasons – it is difficult to determine what a conservative discourse is.

However, as designers, managers, and suppliers involved in the tram procurement process were not interviewed as part of the work, this is difficult to substantiate.

In the absence of a proven beneficial role in humans along with a paucity of information on the toxic effects, an upper safe limit for V is difficult to substantiate.

A recent claim for a Neanderthal modern human hybrid from Portugal dated to approximately 24,000 years ago (Duarte et al. 1999) is difficult to substantiate because this specimen is a child and because its geological age of approximately 24,000 years before present places it several thousand years after the disappearance of the last Neanderthals (Tattersall and Schwartz 1999).

"Some of the things that have been alleged will be difficult to substantiate without speaking directly with the people who filed the lawsuit," he said.

While the published results of Iran's presidential election are widely disputed, claims of fraud have been difficult to substantiate because so many steps took place behind closed doors.

Both parties' claims are dubious and will be difficult to substantiate one way or another.The war of figures will leave most voters bemused, deepening the prevailing mood of disenchantment with politics.

Occasionally, lizards and toads may also be found in the same den, but stories of snakes that share denning sites with small birds and mammals have been difficult to substantiate.

The CO2-capture literature is difficult to follow because the number of papers and patents has exploded, and the claims of the authors are difficult to substantiate.