TASK DEFINITION: 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.
PROBLEM: Sentence1: high pressure systems cause clear weather. 
Sentence2: Weather Clear weather usually means good visibility.

SOLUTION: clear

PROBLEM: Sentence1: Viruses contain DNA but not much else. 
Sentence2: viruses contain encoded information but not much else.

SOLUTION: Viruses

PROBLEM: Sentence1: Habitats often provide animals with camouflage, or places to hide from predators or prey. 
Sentence2: Living underground can camouflage an animal to stay safe.

SOLUTION:
animals