Sentence examples similar to metadata is unavailable from inspiring English sources

Even if the metadata are unavailable, which often occurs in a case of malicious software, we manage to produce the equivalent data by scanning the stack with a flow-based verification method.

Registration is unavailable.

But Lenin is unavailable.

His condition is unavailable.

Not that help is unavailable.

For example, if P0 is unavailable, P1 becomes unavailable, so that P2 also becomes unavailable.

"The service is unavailable".

Ronda Rousey is unavailable.

Dr oz is unavailable.

So, how desirable is unavailable?

"Your personal aircraft is unavailable".