You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
You are given a sentence in Portuguese. Your job is to translate the Portuguese sentence into Japanese.

A ideia é muito, muito simples.
Solution: このアイデアはとてもシンプルで
Why? The Portugese sentence is correctly translated into Japanese, because the meaning is preserved.

New input: E faz-nos ponderar porque falharam esses pioneiros.
Solution:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
なぜこれらの先駆者たちは失敗したのだろうと考えさせられます