[Q]: How does the sentence end?

Angela wasn't a part of the slow food movement and Elena was because

[A]: Elena valued substainability.

[Q]: How does the sentence end?

The workout routine was beneficial to Donald but not Samuel because

[A]: Samuel was not developing any muscles.

[Q]: How does the sentence end?

Jason stayed in bed all day long but not Derrick because

[A]:
Derrick had gone to sleep early last night.