William wiped all of the saliva off of Nelson's chin, because 
OPTIONS:
- William was an invalid.
- Nelson was an invalid.
Nelson was an invalid.

The rail service had problems but the bus service did not because the 
OPTIONS:
- rail service was very chaotic.
- bus service was very chaotic.
rail service was very chaotic.

Angela asked Elena for the wedding date because 
OPTIONS:
- Angela was very forgetful about dates in general.
- Elena was very forgetful about dates in general.
Angela was very forgetful about dates in general.