Sentence examples for a valuable cornerstone from inspiring English sources

But with John Maine and Jon Niese injured and Oliver Perez dispatched to the bullpen, Dickey has suddenly become a valuable cornerstone of the Mets' rotation.

As The Wall Street Journal noted, streaming video has become a valuable cornerstone to Amazon's business -- the company reportedly spends about $3 billion on it annually.

Further studies are required to gauge whether tenofovir, which has become a valuable cornerstone drug in treating HIV infection, can also be safely and effectively used as a vaginal or rectal microbicide.

A) Valuable.

But a valuable one.

A valuable piece, ruined.

acetylchline & histamine, a valuable discovery.

They are a valuable  supplement.

This was a valuable contribution.

This is a valuable insight.

They perform a valuable role".