English assignment help

How do I make a tree structure of the following sentence?

Lunch and tea were marked chiefly by the fact that at those times all the guests were eating together.

I must admit I had not come across this before but this seems to provide a good explanation and guide...

https://www.wikihow.com/Diagram-Sentences

another reference which may be helpful...

https://www.gutenberg.org/files/22577/22577-h/22577-h.htm


You seem to be studying English at a higher level that the native English speakers would.

tree is plant