Given a text, write a compressed version of it in a single sentence.

[Q]: Personally, Prudie is not wild about "boyfriend" and "girlfriend" for people over 30, and she loathes the term "lover" except when used by European women.
[A]: Prudie is not wild about "boyfriend" and "girlfriend" for people over 30 except when used by European women.

[Q]: The research published in Science gives evidence of progress by documenting the first successful transplantation of functional heart cells into an animal model. These transplanted cells line up properly, make the correct connections and function just like native heart cells.
[A]: Scientific research suggests that progress has been made my documenting the first successful transplantation of functional heart cells into an animal model.

[Q]: These various approaches sometimes lead to different discount levels and different associated sets of effects. Also, they sometimes break down in application, when faced with a practical situation that does not align well with the assumptions of the approach.
[A]:
These various approaches sometimes lead to different discount levels and different associated sets of effects.