instruction:
In this task, you are given a sentence. You are expected to recognize the name of any form of chemical substances. Although there might be several correct answers, you need to write one of them.
question:
Expression and 1,4-dihydropyridine-binding properties of brain L-type calcium channel isoforms.
answer:
calcium


question:
Hybrid carbon nanotube networks as efficient hole extraction layers for organic photovoltaics.
answer:
carbon


question:
Marked decline in beta cell function during pregnancy leads to the development of glucose intolerance in Japanese women.
answer:

glucose