I've been thinking about words which are spelled the same but have different pronunciations and meanings. Some of them switch when capitalized. Then there is the challenge of getting both into one sentence. Here's the first ones which occurred to me. I'm sure the great minds on this board will come up with plenty more.

1. The well-bred and soigné Count Przymlsk-Wrzvski was celebrated all over Europe for his Polish polish of manner.
2. A malingerer is defined as an invalid invalid.
3. Washingtonians may be sleepless in Seattle, but Alabamans are mobile in Mobile.
4. A minute is a minute fraction of a year.
5. Was the august emperor born in August?