'An' adjective not 'a' adjective. A sentence cannot be an adjective. An adjective is a word used to describe something or someone. For example - merry, pretty.
yeah well the infinitive phrase is what there looking for so its noun
Adjective
Here is a sentence for King Henry VIII. King Henry was the son of Elizabeth of York and Henry VII of England.
"That's yesterday's news..." uses 'yesterday' to qualify the pronoun 'news'.
Elizabeth the 1st lived in a huge castles than a lovely home.
He was the leader of NSDAP, a party that tried to (by force) take over the regime at 1923. For this he was sentenced to 5 years in prison. He served less than one year of that sentence in the Landsberg prison.
Adjective
Adjective
noun
The robber was plotting to steal money from the bank.
You may be thinking about "premeditated murder."
The idea of the overthrow of the Russian dynasty was pleasant to Mark Twain.
The rebels planned to overthrow the corrupt government and establish a new regime.
The rebel group planned to overthrow the dictator's regime in a swift and decisive manner.
The journalist uncovered evidence that a cabal of power brokers was plotting to overthrow the government.
The plotting of the evil woman was sinister.
there is no adjective in this sentence, an adjective describes a noun
There is no adjective in this sentence.