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:Originally intended to replace the OMO cars which were suffering from metal fatigue , ten were ordered . Sentence 2:However , due to cost cutting only seven were built for Blackpool Transport , with GEC 's 648 later joining the fleet .

SOLUTION: however

PROBLEM: Sentence 1:Like many universities and colleges in the United States , Stanford does not make use of hoods for bachelors . Sentence 2:Instead , bachelors use a stole bearing the university seal at graduation ceremonies .

SOLUTION: instead

PROBLEM: Sentence 1:Reactor - grade plutonium contains Pu - 240 which has a high rate of spontaneous fission , making it an undesirable contaminant in producing safe nuclear weapons . Sentence 2:Nevertheless , nuclear weapons can be made with reactor grade plutonium .

SOLUTION:
nevertheless