Given the question: Given the following context:  Monument 6 is a zoomorph sculpture discovered during the construction of the road that passes the site. It was moved to the Museo Nacional de Arqueología y Etnología in Guatemala City. The sculpture is just over 1 metre (39 in) in height and is 1.5 metres (59 in) wide. It is a boulder carved into the form of an animal head, probably that of a toad, and is likely to date to the Late Preclassic.Monument 7 is a damaged sculpture in the form of a giant head. It stands 0.58 metres (23 in) and was found in the first half of the 20th century on the site of the electricity generator of the Santa Margarita plantation and moved close to the administration office. The sculpture has a large, flat face with prominent eyebrows. Its style is very similar to that of a monument found at Kaminaljuyu in the highlands.Monument 8 is found on the west side of Structure 12. It is a zoomorphic sculpture of a monster with feline characteristics disgorging a small anthropomorphic figure from its mouth.Monument 9 is a local style sculpture representing an owl.Monument 10 is another monument that was moved from its original location; it was moved to the estate of the Santa Margarita plantation and the place where it was originally found is unknown. It is about 0.5 metres (20 in) high and 0.4 metres (16 in) wide. This is a damaged sculpture representing a kneeling captive with the arms tied. Monument 66 is a local style sculpture of a crocodilian head that may date to the Middle Preclassic. It is located to the west of Structure 12.Monument 67 is a badly eroded Olmec-style sculpture showing a figure emerging from the mouth of a jaguar, with one hand raised and gripping a staff. Traces of a helmet are visible. It is located to the west of Structure 12 and dates to the Middle Preclassic.Monument 68 is a local style sculpture of a toad located on the west side of Structure 12. It is believed to date to the Middle Preclassic.Monument 69 is a potbelly monument dating to the Late Preclassic.Monument 70 is a local style sculpture of a frog or...  answer the following question:  How many inches tall is Monument 10?
The answer is:
20