
No lo hice porque lo necesitase,
sino porque me apetecía.
I didn't do it because I needed it, but because I felt like it.

El problema no es el contagio sanitario,
sino el del pánico.
The problem is not sanitary contagion, but that of panic.

Esta vez, el examen no era sólo difícil,
sino que además, las preguntas eran ambiguas.
This time, the exam was not only difficult, but also, the questions were ambiguous.