Read the following paragraph and answer the question. Give ONLY the answer, no other words or explanation.

For example:

Answer: <most likely answer, as short as possible>.

Paragraph: 
Amides are prepared by the reaction of a carboxylic acid with ammonia or an amine.


Question: What kind of reaction is needed to prepare amides?
carboxylic acid reaction
Reaction of a carboxylic acid with ammonia or an amine.