Sherlock Holmes and Doctor Watson are sitting in the beer garden of their local
pub.  It's a beautiful evening, the sky is a little dark and they could just
see the stars starting to come out.

"What are we doing here, Holmes?"  asks Watson.

"We're waiting for a clue that I believe will help solve our latest mystery",
Sherlock replied.  He was referring to the theft of fruit from all over London.

Suddenly there was a streak of light across the sky and they were both pelted
with small round blue objects.

"Blueberries, Holmes!", exclaimed the doctor.
"I'm unsurprised", replies Holmes.

Another streak of light, and they are pelted with small red objects.

"Strawberries, Holmes!"
"As expected, Watson."

Another streak of light, and they are pelted with orangey-pink objects.

"Great Scott, lychees, Holmes!"
"Exactly on time, Watson."

The pattern continues through guavas, grapefruit, papayas, bananas, apples,
oranges and so forth.

"I'm perplexed, Holmes, clearly the fruit is being stolen and somehow being put
into orbit. You obviously knew to expect it coming back down, but how did you
know?"

"Lemon re-entry, Watson", the great detective replied.