Problem: Continue the following story.

The hunter wanted to shoot the target with the bow but the 
Here's how I want to continue it: target was too fast.

Problem: Continue the following story.

The oil made a bigger mess on the floor than on the grass because the 
Here's how I want to continue it: grass was porous.

Problem: Continue the following story.

Mary hired Amy to help solve a murder mystery because 
Here's how I want to continue it:
Amy is highly observant of their surroundings.