instruction:
In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.
question:
Sentence: Substances enter any plant or animal cell by passing through cell membrane of the following structures. Question: Substances enter any plant or animal cell by passing through which of the following structures?
answer:
cell membrane


question:
Sentence: Droughts occurs when there is little to no rain in a period of time. Question: What occurs when there is little to no rain in a period of time?
answer:
droughts


question:
Sentence: Passive transport occurs when substances cross the plasma membrane without any input of energy from the cell. Question: What type of transport occurs when substances cross the plasma membrane without any input of energy from the cell?
answer:

passive transport