To marry sb. to get sth/for sth/in order to get sth

Perfect StrangerWhich of the following sentences is incorrect?

None.

They all work. In these examples it should be "a green card" not "the green card."
However, just in terms of usage and clarity I do not like the second one, and the only nuanced reason I do not like this one is that the woman he married is not the supplier of the green card. Using "for" makes it seem like he obtained it from her, as opposed to marrying her, in order to obtain a

Thanks! I appreciate your explanation!

One more thing... Should I say:

Which of these sentences is or are incorrect.

Perfect StrangerWhich of these sentences is or are incorrect?

If you think that only one is incorrect, use is. Otherwise, use are. I think a better question would be Are the following sentences correct?

KJinCali79However, just in terms of usage and clarity I do not like the second one, and the only nuanced reason I do not like this one is that the woman he married is not the supplier of the green card. Using "for" makes it seem like he obtained it from her, as opposed to marrying her, in order to obtain a green card from the government.

Hmm... but we do say

Perfect StrangerKJinCali79However, just in terms of usage and clarity I do not like the second one, and the only nuanced reason I do not like this one is that the woman he married is not the supplier of the green card. Using "for" makes it seem like he obtained it from her, as opposed to marrying her, in order to obtain a green card from the government.Hmm... but we do sa

KJinCali79Yes, we do, his money. Unlike a green card which the spouse doesn't provide, the government does. That's the distinction about why I wouldn't use "for."

Great answer! Thanks!