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.

Q: What are the different relationships of an ecosystem ?
How many songs has Avril Lavign san ?
Business cycle in 1920 and 1930 ?
How did Nelson Mandela played in abolishing apartheid ?

A: What are the different relationships of an ecosystem ?
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Q: What inspired Henri Matisse ti be an artist ?
What do mean by differentiation ?
How do you beat the case of the avalanche rescuecase on club penguin ?
Who invented the leibniz ?

A: Who invented the leibniz ?
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Q: What is age of senior citizen as per it rules considered not to fill it ?
A straight line represents what ?
The total population of Nairobi Kenya ?
How do you use the word heir in a sentence about octavian ?

A:
How do you use the word heir in a sentence about octavian ?
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