sentence: Elena planted a tree and Erin yanked it out of the ground, so 
complete: Elena failed in their attempt to foster life.

sentence: John prefers windup clocks to digital clocks because they don't need a battery. The 
complete: windup clocks stop working slower.

sentence: Maria asked Megan if she would help clean the garage but 
complete:
Megan did not care if work got done around the house.