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: Results can be damaging or disastrous. 
Sentence2: Lack of immunization can be damaging or disastrous.
[A]: damaging


[Q]: Sentence1: natural magnetism is used for pointing north by a compass. 
Sentence2: For the ordinary compass, align to the North direction.
[A]: north


[Q]: Sentence1: Pregnancy is evidence of sexual intercourse. 
Sentence2: Pregnancy is evidence of sperm being deposited in the vagina.
[A]:
Pregnancy