You've been attributed the task to find the main architect of the Tower of Pisa before he achieves his plans, avoiding us nowadays all those lame pictures of people pretending to stop it from falling.
You arrived at the architects' chamber to find him, but all you have in front of you is a bunch of unknown people.\
Step by step, with the little information you have, gather information and figure out by elimination who he is.
On top of the webpage, each of the four buttons fires a function which has to return an array containing 2 entries: the targetted people, and the others eliminated at that step (the ones previously eliminated mustn't be included).
- Write the body of the `getArchitects` function, which targets the architects, all corresponding to a `<a>` tag.
- Write the body of the `getClassical` function, which targets the architects belonging to the `classical` class.
- Write the body of the `getActive` function, which targets the classical architects who are `active` in their class.
- Write the body of the `getBonannoPisano` function, which targets the architect you're looking for, whose `id` is `BonannoPisano`.
> From now on, don't forget to [**export**](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/export) all the expected functions, so that they can be imported to be tested
