Justice WIth The Farmer

What's the story behind the title? 

"So you have sold the well to the farmer but not the water?" Birbal asked the neighbor. 

"Do you agree that owner of well is the farmer & you are owner of water?" Birbal asks further.

"Exactly!", neighbor replied.

Birbal now points towards the valid question - "So you need to pay rent for keeping your water in his well, or take out all of the water out of well. Don't you?"

By now the neighbor realized that he was outwitted. He had no option other than to apologize & take back his claim.

Who knocked over the monitor?

Melissa and Jessica were working on the computer along with their friends Sandy and Nicole.  Suddenly, I heard a crash and then lots of shouts.  I rushed in to find out what was going on, finding the computer monitor on the ground, surrounded with broken glass!  Sandy and Jessica spoke almost at the same time:

Jessica saying, "It wasn't me!"

Sandy saying, "It was Nicole!"

Melissa yelled, "No, it was Sandy!"

With a pretty straight face Nicole said, "Sandy is a liar."

Only one of them was telling the truth, so who knocked over the monitor? 

Find here who did it! 

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