Sentence 1: The family bought a cow from a rancher. 
 Sentence 3: They thought grass-fed beef was better for their health 
 Sentence 4:  But they felt too bad to kill it 
 Sentence 5:  They kept him alive on their farm for ten years 
 Option 1: THey planned on having it butchered. 
 Option 2: The kids had been begging to have one as a pet and the mom thought the milk would be helpful.