In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

[Q]: Question: Which proteins recognize and combine with harmful materials, including both toxic chemicals and invasive microorganisms? Answer: antibodies
[A]: Antibodies recognize and combine with harmful materials, including both toxic chemicals and invasive microorganisms.


[Q]: Question: What substance is created when a copper turns from reddish brown to greenish brown? Answer: copper oxide
[A]: Copper oxide substance is created when a copper turns from reddish brown to greenish brown.


[Q]: Question: What weather phenomenon, which may bring clouds and precipitation, is created by stalled air masses? Answer: stationary front
[A]:
Stationary front weather phenomenon, which may bring clouds and precipitation, is created by stalled air masses.