Generate an overlapping word between the given two sentences. When you find the overlapping words, they don't have to match exactly, e.g., "survival" and "survive" are valid overlapping words. Little words like "the" or "of" don't count! You must generate significant words which are not the stop words.

[Q]: Sentence1: a stopwatch is used to measure time. 
Sentence2: Time can be measured with a clock or watch.
[A]: measure


[Q]: Sentence1: chemical splashing can cause harm to humans. 
Sentence2: chemical splashing can cause harm to animals.
[A]: cause


[Q]: Sentence1: Ribosomes are assembled inside the nucleus. 
Sentence2: Transcription takes place in the place where ribosomes are assembled.
[A]:
Ribosomes