Task: Generate an overlapping word between the given two sentences. When you find the overlapping words, they don't have to match exactly, e.g., "survival" and "survive" are valid overlapping words. Little words like "the" or "of" don't count! You must generate significant words which are not the stop words.
Categories: Overlap Extraction
Domains: Natural Science

Positive examples:
input: Sentence1: pesticides cause pollution. 
Sentence2: pollution can harm animals.
output: pollution.
explanation: The word "pollution" is common to Sentence1 and Sentence2. So, it's a good answer.; input: Sentence1: a solar panel converts sunlight into electricity. 
Sentence2: sunlight comes from the sun.
output: sunlight.
explanation: The word "sunlight" is common to both sentences. So, it's a good answer.; input: Sentence1: running requires a lot of energy. 
Sentence2: doing a marathon requires a lot of energy.
output: requires.
explanation: The words "requires", "lot", "energy" are common to Sentence1 and Sentence2. Note that "a" and "of" are of little importance and better not be reported. So, it's a good answer.; input: Sentence1: soil is formed by rocks eroding. 
Sentence2: rain can help form soil.
output: form.
explanation: The words "soil", "form" are common to Sentence1 and Sentence2. Note that Sentence1 contains "formed" and Sentence2 contains "form". As per the given instructions, they are treated as the same because of their same base form. So, it's a good answer.; input: Sentence1: a plant requires water for survival. 
Sentence2: rain helps plants to survive.
output: survive.
explanation: The words "plants" and "survive" are the common to Sentence1 and Sentence2. Note that Sentence1 contains "survival" and Sentence2 contains "survive". As per the given instructions, they are treated as the same because of their same base form. So, it's a good answer.; input: Sentence1: vibrations in the air form sound. 
Sentence2: a radio converts electrical energy into sound.
output: sound.
explanation: The word "sound" is common to Sentence1 and Sentence2. So, it's a good answer.; input: Sentence1: chopping down trees results in habitat destruction. 
Sentence2: chopping down trees causes animals to move to another habitat.
output: chopping.
explanation: The words "chopping", "trees", "habitat" are common to Sentence1 and Sentence2. So, it's a good answer.; input: Sentence1: a protractor is used for measuring the angles of a triangular object. 
Sentence2: a prism has a triangular shape.
output: triangular.
explanation: The word "triangular" is common to Sentence1 and Sentence2. Event though the word "a" is also common, it's not counted based on the instruction which says not to count little words or stop words. So, it's a good answer.; input: Sentence1: lightning can cause a forest fire. 
Sentence2: lightning can cause harm to animals.
output: lightning.
explanation: The words "lightning", "cause" are common to Sentence1 and Sentence2. Event though the word "can" is also common, it's not counted based on the instruction which says not to count little words or stop words. So, it's a good answer.

Negative examples:
input: Sentence1: soil is formed by rocks eroding. 
Sentence2: rain can help form soil.
output: soil, form, formed.
explanation: Here Sentence1 contains "formed" and Sentence2 contains "form". As per the given instructions, they should be treated as the same because of their same base form. A good answer would have been either "soil" or "form".; input: Sentence1: a protractor is used for measuring the angles of a triangular object. 
Sentence2: a prism has a triangular shape.
output: a, triangular.
explanation: Even though the word "a" is also common, it is better not to be reported since it adds very little to the meaning. So, it's a bad answer.