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.

Example input: 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 .
Example output: however
Example explanation: The above sentence is connected by the word 'however'.
Q: Sentence 1:BlackBerry announced in its quarterly earnings that half a million PlayBook tablets were shipped in the first quarter . Sentence 2:However , after lukewarm market reception , there were reports that the company allegedly revised its second - quarter estimates from 2.4 million down to 800,000 -- 900,000 units .
A:
however