Sentence examples for rarely substantiated from inspiring English sources

I liked it so much that I can hardly form a coherent sentence about it, but apparently it's oft recommended but the recommendation is rarely substantiated so I will have to have a go.

Counterterrorism experts here expressed wariness, noting that in almost every major attack or suspected plot since 9/11, the role of Al Qaeda has been raised but rarely substantiated.

While research activity in software engineering often results in the development of software tools and solutions that are intended to demonstrate the feasibility of an idea or concept, any resulting conclusions about the degree of success attained are rarely substantiated through the use of supporting experimental evidence.

We come to glimpse him through these accretions of rarely substantiated legend, but in the early part of the book he is allowed to remain tantalisingly elusive.

Results refute some often repeated but rarely substantiated criticisms of journal rankings.

Environmental destruction by pastoralism as a land use option is rarely substantiated (Roba and Oba 2008; Ward et al. 1998).

The lack of a large-scale topographical fingerprint due to periglacial processes may be considered of little relevance, as linear process landscape development relationships rarely can be substantiated.

No allegations were substantiated.

One complaint was substantiated.

Only one has been substantiated.

All of that is substantiated.