Sentence examples for are difficult to assign from inspiring English sources

The period is an especially muddled one for palaeontology, being full of fragmentary fossils that are difficult to assign either to Homo or to Australopithecus.

The results lend support to previous suggestions that some of the weaker lines in the observed spectra, notably those below ∼7 MHz, which are difficult to assign unambiguously, might result from the overlap of lines from different sites.

Several, which are difficult to assign, seem to form a third, hitherto unrecognised clade independently derived from ancestral antbirds.

Although unique functions are difficult to assign to specific frontal regions, connectivity studies demonstrate general relationships between frontal cortical areas.

Thus, only 16% of northern Asian haplogroup H lineages are difficult to assign, but at least 42% are likely of European and another 42% of western Asian origin.

While centromere positions in linkage map based scaffolds are difficult to assign with confidence, the exact locations of kinetochores relative to scaffolds were determined by FISH.

Care is widely dispersed, so it is difficult to assign responsibility to one doctor.

It was difficult to assign political meaning to a mathematical statement".

It's difficult to assign the drop to racism given that these are voters who stuck with Obama twice.

It's difficult to assign individual blame, with Ofcom, two different governments and the mobile operators all playing roles".

Appraisals of the property varied widely, Mr. Guldi said, mainly because it is difficult to assign a value when nothing like it has been sold in years.