People with thickened heart valves may need to take antibiotics before some types of dental and surgical procedures because they are at risk of developing an infection on the <e1>valve</e1> in the <e2>heart</e2>.
People with thickened heart
People with thickened heart valves may need to take antibiotics before some types of dental and surgical procedures because they are at risk of developing an infection on the valve in the heart.
<triplet> valve <subject> heart <object> Component-Whole(e1,e2)