Here we have the sentence ‘Max and Ben ate their dinner.’ We have labelled the words, and we can construct the tree for the verb phrases, but we need to make a noun phrase for ‘Max and Ben’. So how do we make the noun phrase? Well, ‘Max’ and ‘Ben’ are both proper nouns, meaning that they don’t need a determiner. So here we just simply join ‘Max’, ‘and’, and ‘Ben’ together at the same time.