You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Child_labour

Context:
As in many other countries, child labour in Switzerland affected among the so-called Kaminfegerkinder ("chimney sweep children") and chidren working p.e. in spinning mills, factories and in agriculture in 19th-century Switzerland, but also to the 1960s so-called Verdingkinder (literally: "contract children" or "indentured child laborers") were children who were taken from their parents, often due to poverty or moral reasons – usually mothers being unmarried, very poor citizens, of Gypsy–Yeniche origin, so-called Kinder der Landstrasse, etc. – and sent to live with new families, often poor farmers who needed cheap labour.

Question:
What is Kaminfegerkinder?

chimney sweep children