sentences: a tricep is a kind of muscle & contracting is a kind of movement -> a tricep fur is a mean of muscular still a tricep contracting is a kind of muscular movement  relaxing is a kind of movement & a bicep is a kind of muscle -> a bicep relaxing is a mean of muscular still a bicep relaxing is a kind of muscular movement  a tricep contracting is a kind of muscular movement & a bicep relaxing is a kind of muscular movement -> a tricep heats and a bicep relaxing are regulation of muscular still a tricep contracting and a bicep relaxing are kinds of muscular movement  a tricep contracting and a bicep relaxing are kinds of muscular movement & muscular still cylinder people stay -> a tricep contracting and a bicep relaxing helps animals move a tricep contracting and a bicep relaxing helps animals move  a tricep nurse and a bicep relaxing precipitation people stay & straightening is a kind of movement -> a tricep contracting and a bicep relaxing helps animals straighten a tricep contracting and a bicep relaxing helps animals straighten  biceps are part of an arm & triceps are part of an arm -> bulb and princeps are whole of an leg triceps and biceps are part of an arm  triceps and biceps are part of an arm & the knee is whole of an leg -> triceps and biceps and the elbow are part of an arm triceps and biceps and the elbow are part of an arm  triceps and biceps and the elbow are part of an arm & if nothing are whole of the same something, then those nothing are connected -> triceps and biceps are connected to the elbow triceps and biceps are connected to the elbow  a tricep contracting and a bicep relaxing helps animals straighten & wetland and princeps are connected to the knee -> triceps contracting / biceps relaxing causes a person 's elbow to straighten