You are given a list of queries separated by new line. Your job is to answer with the query that is the most well-formed or well-structured query in terms of grammar, punctuations, or spelling errors.
--------
Question: Light emitting diod mean ?
How did Nelson Mandela played in abolishing apartheid ?
How big is nano technology ?
Why is genome sequencing important ?

Answer: Why is genome sequencing important ?

Question: What is he function of the endoplasmic reticulum ?
2 major mountain ranges in africa ?
Medical term for heartburn caused by regurgitation of stomach acid ?
What is the seaport city in the european country spaain ?

Answer: What is the seaport city in the european country spaain ?

Question: What music is plan in mexico ?
What does the mohs hardness scales determine ?
When was joann wolfgang von goethe the germen poet scientist and novelist born ?
What r the hindrences in the dvelopment of tourism in india ?

Answer:
What does the mohs hardness scales determine ?