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.

Q: Sentence1: Petals attract pollinators to the flower. 
Sentence2: Something a daisy has attracts pollinators.

A: attract
****
Q: Sentence1: Mollusks live in most terrestrial, freshwater, and marine habitats. 
Sentence2: Clams live in freshwater habitats.

A: freshwater
****
Q: Sentence1: Tunicates reproduce sexually. 
Sentence2: tunicates reproduce using gametes.

A:
Tunicates
****