I went to the Pantheon in Greece.
The Jonas brothers are buried in a pantheon.
Condescension is a long word and i am putting it in to a sentence.
No, You cannot use but to start a sentence.
antidisestablishmentarism is a very long word.
Example sentence - We walked quietly in the long hallway.
That area will be radioactive for a long, long time.
The immunization was long and painful.
for example "how long is a metre?"
there was a tsunami in japan not to long ago
Example sentence - He had no idea how long it would be before the crime was discovered.
He carried with him a long rope for which he would use to confine his prisoners.