TASK DEFINITION: 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.
PROBLEM: Sentence 1:This is in contrast to waterfall models where the process is often highly controlled and minor changes to the system require significant revision of supporting documentation . Sentence 2:However , this does not justify completely doing without any analysis or design at all .

SOLUTION: however

PROBLEM: Sentence 1:WPA - RADIUS can not be cracked . Sentence 2:However , if the RADIUS authentication server itself can be cracked , then the whole network is imperilled .

SOLUTION: however

PROBLEM: Sentence 1:It has no leader with genuine permanent authority . Sentence 2:Instead , there are village elders who meet when important decisions need to be made .

SOLUTION:
instead