Sentence examples for but existing from inspiring English sources

A range of cropland intensity metrics exist, but existing data are often uncertain.

Hartshorne's view is that existence alone might not be a real predicate, but existing necessarily certainly is.

But existing home sales fell unexpectedly.

But existing grammar schools are allowed to expand.

But existing pensioners are still entitled to their cheques.

But existing technologies already allow us to keep our climate impact comparatively dainty.

But existing solar technology works best when it is near the user, experts say.

But existing home sales (pdf) fall and the Architecture Billings Index drops substantially.

But existing SMES prototypes can only store energy for a few minutes at a time.

But existing global arrangements for nuclear security lack uniformity and coherence.

What should doctors do in cases like these where compassion demands flexibility but existing evidence is inadequate?