You are given a set of queries separated by '
', and your job is to find out the query which is not a well-formed or well-structured query in terms of grammar, punctuations, or spelling errors.

Can a quadrilateral be classified as scalene ?
How many differant species of primates exist ?
What are the signs of positive stress ?
How do people 's actionmight affect a natural sand dune vegetation succession ?
How do people 's actionmight affect a natural sand dune vegetation succession ?