Problem: If "James asked Robert for a favor but he was refused.", does it follow that "Robert was refused."?

Answer: no

Problem: If "The path to the lake was blocked, so we couldn't reach it.", does it follow that "We couldn't reach the lake."?

Answer: yes

Problem: If "Bill passed the half-empty plate to John because he was hungry.", does it follow that "Bill was hungry."?

Answer: no

Problem: If "Joan made sure to thank Susan for all the help she had given.", does it follow that "Joan made sure to thank Susan for all the help Susan had given."?

Answer:
yes