( ( Along ( with pictures ) ) ( we ( ( have ( ( interpretive signs ) ( ( ( ( explaining ( ( the meaning ) ( of ( ( ectothermy , ) ( ( the lack ) ( of slime ) ) ) ) ) ) ( on reptiles ) ) , ) ( that ( snakes ( are ( unable ( to ( ( ( blink ( , ( ( that ( snakes ( smell ( with ( ( ( their tongue ) , ) ( ( the ( shedding process ) ) ( in snakes ) ) ) ) ) ) ) , ) ) ) and ) hibernation ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (ADVP (IN Along) (PP (IN with) (NP (NNS pictures)))) (NP (PRP we)) (VP (VBP have) (NP (NP (JJ interpretive) (NNS signs)) (VP (VBG explaining) (NP (NP (DT the) (NN meaning)) (PP (IN of) (NP (NP (NN ectothermy)) (, ,) (NP (NP (DT the) (NN lack)) (PP (IN of) (NP (NN slime))))))) (PP (IN on) (NP (NNS reptiles))) (, ,) (SBAR (IN that) (S (NP (NNS snakes)) (VP (VBP are) (ADJP (JJ unable) (S (VP (TO to) (VP (VB blink) (PRN (, ,) (SBAR (IN that) (S (NP (NNS snakes)) (VP (VBP smell) (PP (IN with) (NP (NP (PRP$ their) (NN tongue)) (, ,) (NP (NP (DT the) (VBG shedding) (NN process)) (PP (IN in) (NP (NNS snakes))))))))) (, ,)) (CC and) (VB hibernation))))))))))) (. .)))
Along with pictures we have interpretive signs explaining the meaning of ectothermy, the lack of slime on reptiles, that snakes are unable to blink, that snakes smell with their tongue, the shedding process in snakes, and hibernation.
(ROOT (S (NP (NNS Snakes)) (VP (VBP use) (NP (PRP$ their) (NN tongue)) (PP (TO to) (NP (NN smell) (NNS things)))) (. .)))
Snakes use their tongue to smell things.