How do you use whereupon in a sentence?

Relevant answers:

When to use this in a sentence or when to use these in a sentence?
'Would you like this candy or these desserts to follow the meal?'This is being used as an indicator for a singular item, and these is being used as an indicator for multiple items.See the related...
How do you use clean out use in a sentence?
I have decided to clean out my garage next week. - as a verb we are having a clean out at home on the weekend. - as a noun
How do you use use kettle in a sentence?
Example sentence - I heated the water in the kettle to make tea.
Can you use topic sentence in a sentence?
When I prepare to write a speech, the idea summary will be found in the topic sentence.
When do you use its and when do you use it's in a sentence?
Use it's (with the apostrophe) only when you mean "it is" or "it has." For example: It's time to go. (It is time to go.)It's been a long time. (It has been a long time.) Use its (without the...