> Robin felt responsible for his team's loss in a football match because of JP. He overheard JP's mom discussing JP's habit of being alone and invited JP to his birthday party out of sympathy. Robin and his Grandad bought a lion figurine named Leon the Lion at a car boot sale, and it told them about lions. Leon described himself as a lonely lion and tried to find a job to make friends, eventually succeeding in radio broadcasting. Meanwhile, Grandad bought tins for Grandma's trifle, but they were without fruit. Lastly, JP was invited to join the Scouts due to a shared interest in nature.

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Robin felt responsible for his team's loss in a football match because of JP.

This sentence is correct.

He overheard JP's mom discussing JP's habit of being alone and invited JP to his birthday party out of sympathy.

This sentence is correct.

Robin and his Grandad bought a lion figurine named Leon the Lion at a car boot sale, and it told them about lions.

Robin and his grandad bought a lion figurine named Leon the Lion at a car boot sale, and it told them about lions.

"Grandad" shouldn't be capitalized because it is a common noun, not a proper noun.

Leon described himself as a lonely lion and tried to find a job to make friends, eventually succeeding in radio broadcasting.

This sentence is correct.

Meanwhile, Grandad bought tins for Grandma's trifle, but they were without fruit.

This sentence is correct.

Lastly, JP was invited to join the Scouts due to a shared interest in nature.

This sentence is correct.