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.

Ex Input:
Sentence 1:Everyone runs in terror and several shots are fired in a vain attempt to stop the killing . Sentence 2:However , several times throughout the episode , Pepe Lucho manages to catch up again to the protagonist , causing more terror .

Ex Output:
however


Ex Input:
Sentence 1:Some IGFBPs are inhibitory . Sentence 2:For example , both IGFBP - 2 and IGFBP - 5 bind IGF - 1 at a higher affinity than it binds its receptor .

Ex Output:
for example


Ex Input:
Sentence 1:This database contains images and data collected by the Catlin Seaview Survey and by other coral reef research . Sentence 2:However , the huge photographic records generated by the Catlin Seaview Survey are the main aspect of this record .

Ex Output:

however