Guess the difference in these sentences.

[Bulgar]

Hi, all of you. It's been ages since I've come back here.

Anyway, I will write a couple of sentences, and I want you all to guess the difference in meaning between the two.

＞　豊田さんはあの店で映画は買わない。
＞　豊田さんはあの店では映画を買わない。

Any takers?

[richvh]

＞　豊田さんはあの店で映画は買わない。

Mr. Toyota isn't going to buy a movie at that store (he's going to buy something else.)

＞　豊田さんはあの店では映画を買わない。

Mr. Toyota isn't going to buy a movie at that store (he'll buy it somewhere else.)

[Bulgar]

＞　豊田さんはあの店で映画は買わない。

Mr. Toyota isn't going to buy a movie at that store (he's going to buy something else.)

＞　豊田さんはあの店では映画を買わない。

Mr. Toyota isn't going to buy a movie at that store (he'll buy it somewhere else.)

Excellent job, richvh! (Still working on Yuki, by the way?)

Also, am I correct in guessing that the particle は followed by a negative verb usually implies a contrast? Consider these two sentences about a person at a concert:

＞　幸子は歌手じゃない。
Sachiko isn't a singer (but the people around her are.)

＞　幸子が歌手じゃない。
Sachiko isn't a singer. (No meaning beyond that.)

[richvh]

Excellent job, richvh! (Still working on Yuki, by the way?)

Off and on. Mostly off lately.

Also, am I correct in guessing that the particle は followed by a negative verb usually implies a contrast? Consider these two sentences about a person at a concert:

＞　幸子は歌手じゃない。
Sachiko isn't a singer (but the people around her are.)

Sachiko isn't a singer (she's a different kind of person; there is a contrastive は in the sentence, but it's the one that's been contracted with で; the one after 幸子 is setting the topic)

＞　幸子が歌手じゃない。
Sachiko isn't a singer. (No meaning beyond that.)

Sachiko isn't the singer (someone else is; in this case, が is selecting Sachiko out of a group as "not a singer"; this is logically the same as 歌手は幸子じゃない)