Are you asking how the verb in 国際会議がこの町で開かれます is read? If so, it's read ひらかれます.

開（ひら）く (transitive) = to open, to hold
You ひらく things. (doors, windows, shops, conferences, etc)

開（あ）く (intransitive) = to open
Things　can あく by themselves. (A door by a wind, for instance)
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ひらく can be an intransitive verb as well. 「ドアがひらいた」

An explanation (in Japanese) of ひらく and あく: 「開く（あく）」と「開く（ひらく）」 「あく（開く）」と「ひらく（開く）」はど... - Yahoo!知恵袋

This looks good, thanks! :D

Nevermind.

本当にどうもありがとうございました、masaegu san. :)

Hi masaegu san. Am I right to say that I am able to alter this sentence pattern "フランスで昔の日本の絵が発見されました" to "フランスで昔の日本の絵は発見されました" if the listener hasn't knew about the news yet?

Another question which I am curious about is "初めてアメリカの大統領は１７００年にえらばれました". Why doesn't the particle need to be replace to "が" if the listener hasn't knew about it yet? And what happen if I say 初めてアメリカの大統領が１７００年にえらばれました?

No, of course not. Have you been reading my posts?

That's different from some painting found in France.

Tell me how many "the First U.S. President" there is. There is only one. Even if you use は, no one will reply "Which president are you referring to?". You following me?

If you say all of a sudden ”フランスで昔の日本の絵は発見されました”, you are simply confusing the listener(s) as no one knows what painting you are referring to.

So sorry, what I meant was "Am I right to say that I am able to alter this sentence pattern "フランスで昔の日本の絵が発見されました" to "フランスで昔の日本の絵は発見されました" if the listener already knewabout the news?".

I assume I can alter it?

If it's already been mentioned in the course of the conversation, then yes.

Thanks alot masaegu san, and please don't be mad at me. I am just feeling really sleepy right now. :p