One of the most well-known philosophical plays of the twentieth century. ... “The toy industry is real science,” adds Georgia Van de Zande, a lecturer for the class. ... a theme for the discussion), but it was still good to see different businesses and ... he discovered his interest in the immune system, and made it his life's work.
You didnt provide the second sentence but from my understanding the prefix "un" , which means not, could be added to friendly to mean unfriendly or not friendly.
