What is Google Assistant Continued Conversation and how do you enable the feature?

Have you ever asked Google Assistant a question and then wanted to immediately ask a follow-up question, only to have to start again from the beginning? For example, that might look like this:

1. Hey, Google, who does Miles Turner play for?
2. Hey, Google, how tall is Miles Turner?
3. Hey, Google, how old is Miles Turner?

It works fine. However, what if you wanted that to be more conversational, like this:

1. Hey, Google, who does Miles Turner play for?
2. How tall is he?
3. How old is…