A parse tree is an ordered, rooted tree representing the structure of a sentence, broken down to parts-of-speech.

This diagram uses a custom TreeLayout called FlatTreeLayout that places all leaf nodes at the same Y position. It also makes use of a TreeExpanderButton on the node template. See the Intro page on Buttons for more GoJS button information.

The abbreviations used in this diagram are:

• NP, a noun phrase
• VP, a verb phrase
• PP, a prepositional phrase
• DT, a determiner
• JJ, an adjective
• NN, a common noun
• VBZ, a third person singular present verb
• VBN, a past participle verb