Problem: Continue the following story.

Because Natalie likes birds and Elena prefers dogs, 
OPTIONS:
- Natalie went to the store and bought a dog as a pet.
- Elena went to the store and bought a dog as a pet.
Here's how I want to continue it: Elena went to the store and bought a dog as a pet.

Problem: Continue the following story.

Megan wanted Elena to ask a guy to hang out because she wanted 
OPTIONS:
- Megan to have a boyfriend.
- Elena to have a boyfriend.
Here's how I want to continue it: Elena to have a boyfriend.

Problem: Continue the following story.

Maria was perfectly happy being in a relationship with Tanya, so 
OPTIONS:
- Maria wanted to stay together forever.
- Tanya wanted to stay together forever.
Here's how I want to continue it:
Maria wanted to stay together forever.