In this task, you are given two sentences in the English language (Sentence 1 and Sentence 2). Your task is to identify the connecting word between the two sentences.

Let me give you an example: Sentence 1:A suicide car bomber detonated his bomb as he attempted to drive an SUV into a Somali military camp . Sentence 2:However the vehicle exploded at the entrance when police guards opened fire on the insurgent driving the vehicle .
The answer to this example can be: however
Here is why: The above sentence is connected by the word 'however'.

OK. solve this:
Sentence 1:On Day 35 , housemates discovered that they had passed the task ; having incurred 23 fails out of a possible 33 . Sentence 2:The housemates therefore won a luxury shopping budget for the week .
Answer:
therefore