Given the task definition and input, reply with output. 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.

Sentence 1:While spying on Veronica , Tony sees her with a mentally unstable young man with red hair like Adrian , and starts to believe it is their son . Sentence 2:However Tony later learns that Adrian Jr. is not Veronica 's son but her younger half - brother .
however